diff --git a/DESCRIPTION b/DESCRIPTION
index 5bb4c75..41c2015 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -31,3 +31,4 @@ Suggests:
 VignetteBuilder: knitr
 Encoding: UTF-8
 RoxygenNote: 7.3.1
+Roxygen: list(markdown = TRUE)
diff --git a/R/continuous-gsea.R b/R/continuous-gsea.R
index 5cf6640..446b639 100644
--- a/R/continuous-gsea.R
+++ b/R/continuous-gsea.R
@@ -1,14 +1,14 @@
-#' The GSEA GenePattern Color Palettes
+#' The GSEA GenePattern color palettes
 #'
 #' Color palette inspired by the colors used in the
 #' heatmaps plotted by GSEA GenePattern.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (continuous palette with 12 base colors).
+#'   Currently there is one available option: `"default"`
+#'   (continuous palette with 12 base colors).
 #' @param n Number of individual colors to be generated.
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #' @param reverse Logical. Should the order of the colors be reversed?
 #'
 #' @export rgb_gsea
@@ -16,11 +16,10 @@
 #' @importFrom grDevices colorRamp rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @note The 12 base colors used in this palette are derived from the
-#' \href{https://modulerepository.genepattern.org/gpModuleRepository/download/prod/module/?file=/HeatMapImage/broad.mit.edu:cancer.software.genepattern.module.analysis/00032/6/HeatMapImage.pdf}{HeatMapImage documentation}.
+#' [HeatMapImage documentation](https://modulerepository.genepattern.org/gpModuleRepository/download/prod/module/?file=/HeatMapImage/broad.mit.edu:cancer.software.genepattern.module.analysis/00032/6/HeatMapImage.pdf).
 #'
 #' @examples
 #' library("scales")
@@ -44,7 +43,7 @@ rgb_gsea <- function(palette = c("default"), n = 12, alpha = 1, reverse = FALSE)
   alpha_cols
 }
 
-#' The GSEA GenePattern Color Palettes
+#' The GSEA GenePattern color palettes
 #'
 #' Color palette inspired by the colors used in the
 #' heatmaps plotted by GSEA GenePattern.
@@ -55,8 +54,7 @@ rgb_gsea <- function(palette = c("default"), n = 12, alpha = 1, reverse = FALSE)
 #'
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -68,19 +66,18 @@ pal_gsea <- function(palette = c("default"), n = 12, alpha = 1, reverse = FALSE)
   manual_pal(unname(alpha_cols))
 }
 
-#' The GSEA GenePattern Color Scales
+#' The GSEA GenePattern color scales
 #'
-#' See \code{\link{pal_gsea}} for details.
+#' See [pal_gsea()] for details.
 #'
 #' @inheritParams pal_gsea
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_gsea
 #'
 #' @importFrom ggplot2 scale_color_gradientn
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_gsea
 #'
diff --git a/R/continuous-material.R b/R/continuous-material.R
index 7557e4c..bc8dab7 100644
--- a/R/continuous-material.R
+++ b/R/continuous-material.R
@@ -1,34 +1,34 @@
-#' Material Design Color Palettes
-#'
-#' The Material Design color palettes.
-#'
-#' @param palette Palette type.
-#' There are 19 available options:
-#' \itemize{
-#' \item \code{"red"}
-#' \item \code{"pink"}
-#' \item \code{"purple"}
-#' \item \code{"deep-purple"}
-#' \item \code{"indigo"}
-#' \item \code{"blue"}
-#' \item \code{"light-blue"}
-#' \item \code{"cyan"}
-#' \item \code{"teal"}
-#' \item \code{"green"}
-#' \item \code{"light-green"}
-#' \item \code{"lime"}
-#' \item \code{"yellow"}
-#' \item \code{"amber"}
-#' \item \code{"orange"},
-#' \item \code{"deep-orange"}
-#' \item \code{"brown"}
-#' \item \code{"grey"}
-#' \item \code{"blue-grey"}}
-#' See \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}
-#' for details.
+#' Material Design color palettes
+#'
+#' The Material Design 2 color palettes.
+#'
+#' @param palette Palette type. There are 19 available options:
+#'   - `"red"`
+#'   - `"pink"`
+#'   - `"purple"`
+#'   - `"deep-purple"`
+#'   - `"indigo"`
+#'   - `"blue"`
+#'   - `"light-blue"`
+#'   - `"cyan"`
+#'   - `"teal"`
+#'   - `"green"`
+#'   - `"light-green"`
+#'   - `"lime"`
+#'   - `"yellow"`
+#'   - `"amber"`
+#'   - `"orange"`,
+#'   - `"deep-orange"`
+#'   - `"brown"`
+#'   - `"grey"`
+#'   - `"blue-grey"`
+#'
+#'   For details, see [Material Design color
+#'   system](https://m2.material.io/design/color/the-color-system.html).
+#'
 #' @param n Number of individual colors to be generated.
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #' @param reverse Logical. Should the order of the colors be reversed?
 #'
 #' @export rgb_material
@@ -36,11 +36,10 @@
 #' @importFrom grDevices colorRamp rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @references
-#' \url{https://m2.material.io/design/color/the-color-system.html}
+#' <https://m2.material.io/design/color/the-color-system.html>
 #'
 #' @examples
 #' library("scales")
@@ -69,9 +68,9 @@ rgb_material <- function(
   alpha_cols
 }
 
-#' Material Design Color Palettes
+#' Material Design color palettes
 #'
-#' The Material Design color palettes.
+#' The Material Design 2 color palettes.
 #'
 #' @inheritParams rgb_material
 #'
@@ -79,8 +78,7 @@ rgb_material <- function(
 #'
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -98,19 +96,18 @@ pal_material <- function(
   manual_pal(unname(alpha_cols))
 }
 
-#' Material Design Color Palettes
+#' Material Design color palettes
 #'
-#' See \code{\link{pal_material}} for details.
+#' See [pal_material()] for details.
 #'
 #' @inheritParams pal_material
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_material
 #'
 #' @importFrom ggplot2 scale_color_gradientn
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_material
 #'
diff --git a/R/discrete-aaas.R b/R/discrete-aaas.R
index 14e4979..98e0dc0 100644
--- a/R/discrete-aaas.R
+++ b/R/discrete-aaas.R
@@ -1,22 +1,21 @@
-#' AAAS Journal Color Palettes
+#' AAAS journal color palettes
 #'
 #' Color palettes inspired by plots in journals published by
 #' American Association for the Advancement of Science (AAAS),
-#' such as \emph{Science} and \emph{Science Translational Medicine}.
+#' such as _Science_ and _Science Translational Medicine_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (10-color palette inspired by \emph{Science}).
+#'   Currently there is one available option: `"default"`
+#'   (10-color palette inspired by _Science_).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_aaas
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -38,19 +37,18 @@ pal_aaas <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' AAAS Journal Color Scales
+#' AAAS journal color scales
 #'
-#' See \code{\link{pal_aaas}} for details.
+#' See [pal_aaas()] for details.
 #'
 #' @inheritParams pal_aaas
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_aaas
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_aaas
 #'
diff --git a/R/discrete-bmj.R b/R/discrete-bmj.R
index 38d53c3..0673378 100644
--- a/R/discrete-bmj.R
+++ b/R/discrete-bmj.R
@@ -1,19 +1,22 @@
-#' BMJ Color Palettes
+#' BMJ color palettes
 #'
 #' Color palette from the BMJ living style guide.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (9-color palette).
+#'   Currently there is one available option: `"default"`
+#'   (9-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_bmj
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Hui Chen <\email{huichen@@zju.edu.cn}>
+#' @author Hui Chen | \email{huichen@zju.edu.cn}
+#'
+#' @references
+#' <https://technology.bmj.com/living-style-guide/colour.html>
 #'
 #' @examples
 #' library("scales")
@@ -35,21 +38,24 @@ pal_bmj <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' BMJ Color Scales
+#' BMJ color scales
 #'
-#' See \code{\link{pal_bmj}} for details.
+#' See [pal_bmj()] for details.
 #'
 #' @inheritParams pal_bmj
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_bmj
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Hui Chen <\email{huichen@@zju.edu.cn}>
+#' @author Hui Chen | \email{huichen@zju.edu.cn}
 #'
 #' @rdname scale_bmj
 #'
+#' @references
+#' <https://technology.bmj.com/living-style-guide/colour.html>
+#'
 #' @examples
 #' library("ggplot2")
 #' data("diamonds")
diff --git a/R/discrete-cosmic.R b/R/discrete-cosmic.R
index f2ca97e..d8c048e 100644
--- a/R/discrete-cosmic.R
+++ b/R/discrete-cosmic.R
@@ -1,25 +1,26 @@
-#' COSMIC Color Palettes
+#' COSMIC color palettes
 #'
 #' Color palettes inspired by the colors used in projects from the
-#' \href{https://cancer.sanger.ac.uk/cosmic}{Catalogue Of
-#' Somatic Mutations in Cancers (COSMIC)}
+#' [Catalogue Of
+#' Somatic Mutations in Cancers (COSMIC)](https://cancer.sanger.ac.uk/cosmic).
 #'
 #' @param palette Palette type. Currently there are three available options:
-#' \code{"signature_substitutions"} (6-color palette),
-#' \code{"hallmarks_light"} (10-color palette), and \code{"hallmarks_dark"}
-#' (10-color palette). The \code{"hallmarks_light"} option is from
-#' \href{https://pubmed.ncbi.nlm.nih.gov/21376230/}{Hanahan and Weinberg (2011)}.
+#'   - `"signature_substitutions"` (6-color palette).
+#'   - `"hallmarks_light"` (10-color palette).
+#'   - `"hallmarks_dark"` (10-color palette).
 #'
+#'   The `"hallmarks_light"` option is from
+#'   [Hanahan and Weinberg (2011)](https://pubmed.ncbi.nlm.nih.gov/21376230/).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_cosmic
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Joshua H. Cook <\email{joshuacook0023@@gmail.com}> |
-#' <\href{https://github.com/jhrcook}{GitHub/jhrcook}>
+#' @author Joshua H. Cook | \email{joshuacook0023@gmail.com} |
+#' [@jhrcook](https://github.com/jhrcook)
 #'
 #' @examples
 #' library("scales")
@@ -47,19 +48,19 @@ pal_cosmic <- function(
   manual_pal(unname(alpha_cols))
 }
 
-#' COSMIC Color Scales
+#' COSMIC color scales
 #'
-#' See \code{\link{pal_cosmic}} for details.
+#' See [pal_cosmic()] for details.
 #'
 #' @inheritParams pal_cosmic
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_cosmic
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Joshua H. Cook <\email{joshuacook0023@@gmail.com}> |
-#' <\href{https://github.com/jhrcook}{GitHub/jhrcook}>
+#' @author Joshua H. Cook | \email{joshuacook0023@gmail.com} |
+#' [@jhrcook](https://github.com/jhrcook)
 #'
 #' @rdname scale_cosmic
 #'
diff --git a/R/discrete-d3.R b/R/discrete-d3.R
index 9478115..e5bee25 100644
--- a/R/discrete-d3.R
+++ b/R/discrete-d3.R
@@ -1,25 +1,24 @@
-#' D3.js Color Palettes
+#' D3.js color palettes
 #'
 #' Color palettes based on the colors used by D3.js.
 #'
-#' @param palette Palette type.
-#' There are 4 available options:
-#' \code{"category10"} (10-color palette);
-#' \code{"category20"} (20-color palette);
-#' \code{"category20b"} (20-color palette);
-#' \code{"category20c"} (20-color palette).
+#' @param palette Palette type. There are four available options:
+#'   - `"category10"` (10-color palette).
+#'   - `"category20"` (20-color palette).
+#'   - `"category20b"` (20-color palette).
+#'   - `"category20c"` (20-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_d3
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
-#' @references \url{https://github.com/d3/d3-3.x-api-reference/blob/master/Ordinal-Scales.md}
+#' @references
+#' <https://github.com/d3/d3-3.x-api-reference/blob/master/Ordinal-Scales.md>
 #'
 #' @examples
 #' library("scales")
@@ -43,21 +42,21 @@ pal_d3 <- function(palette = c("category10", "category20", "category20b", "categ
   manual_pal(unname(alpha_cols))
 }
 
-#' D3.js Color Scales
+#' D3.js color scales
 #'
-#' See \code{\link{pal_d3}} for details.
+#' See [pal_d3()] for details.
 #'
 #' @inheritParams pal_d3
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_d3
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
-#' @references \url{https://github.com/d3/d3-3.x-api-reference/blob/master/Ordinal-Scales.md}
+#' @references
+#' <https://github.com/d3/d3-3.x-api-reference/blob/master/Ordinal-Scales.md>
 #'
 #' @rdname scale_d3
 #'
diff --git a/R/discrete-flatui.R b/R/discrete-flatui.R
index f41d464..9c5c2d5 100644
--- a/R/discrete-flatui.R
+++ b/R/discrete-flatui.R
@@ -1,21 +1,20 @@
-#' Flat UI Color Palettes
+#' Flat UI color palettes
 #'
-#' Color palettes inspired by the colors used in \emph{Flat UI Colors}.
+#' Color palettes inspired by the Flat UI colors.
 #'
-#' @param palette Palette type.
-#' Currently there are three available option:
-#' \code{"default"} (10-color palette).
-#' \code{"flattastic"} (12-color palette).
-#' \code{"aussie"} (10-color palette).
+#' @param palette Palette type. Currently there are three available options:
+#'   - `"default"` (10-color palette).
+#'   - `"flattastic"` (12-color palette).
+#'   - `"aussie"` (10-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_flatui
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Clara Jégousse <\email{cat3@@hi.is}>
+#' @author Clara Jégousse | \email{cat3@hi.is}
 #'
 #' @examples
 #' library("scales")
@@ -39,18 +38,18 @@ pal_flatui <- function(palette = c("default", "flattastic", "aussie"), alpha = 1
   manual_pal(unname(alpha_cols))
 }
 
-#' Flat UI Color Scales
+#' Flat UI color scales
 #'
-#' See \code{\link{pal_flatui}} for details.
+#' See [pal_flatui()] for details.
 #'
 #' @inheritParams pal_flatui
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_flatui
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Clara Jégousse <\email{cat3@@hi.is}>
+#' @author Clara Jégousse | \email{cat3@hi.is}
 #'
 #' @rdname scale_flatui
 #'
diff --git a/R/discrete-frontiers.R b/R/discrete-frontiers.R
index ff328a5..7128840 100644
--- a/R/discrete-frontiers.R
+++ b/R/discrete-frontiers.R
@@ -1,19 +1,19 @@
-#' Frontiers Color Palettes
+#' Frontiers journal color palettes
 #'
-#' Color palettes inspired by the colors used in \emph{Frontiers}.
+#' Color palettes inspired by the colors used in _Frontiers_ journals.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (10-color palette).
+#'   Currently there is one available option: `"default"`
+#'   (10-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_frontiers
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Clara Jégousse <\email{cat3@@hi.is}>
+#' @author Clara Jégousse | \email{cat3@hi.is}
 #'
 #' @examples
 #' library("scales")
@@ -35,18 +35,18 @@ pal_frontiers <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Frontiers Color Scales
+#' Frontiers journal color scales
 #'
-#' See \code{\link{pal_frontiers}} for details.
+#' See [pal_frontiers()] for details.
 #'
 #' @inheritParams pal_frontiers
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_frontiers
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Clara Jégousse <\email{cat3@@hi.is}>
+#' @author Clara Jégousse | \email{cat3@hi.is}
 #'
 #' @rdname scale_frontiers
 #'
diff --git a/R/discrete-futurama.R b/R/discrete-futurama.R
index ab85aa4..6f6b1c9 100644
--- a/R/discrete-futurama.R
+++ b/R/discrete-futurama.R
@@ -1,20 +1,19 @@
-#' The Futurama Color Palettes
+#' Futurama color palettes
 #'
-#' Color palettes inspired by the colors used in \emph{Futurama}.
+#' Color palettes inspired by the colors used in _Futurama_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"planetexpress"}
-#' (12-color palette).
+#'   Currently there is one available option: `"planetexpress"`
+#'   (12-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_futurama
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -36,19 +35,18 @@ pal_futurama <- function(palette = c("planetexpress"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' The Futurama Color Scales
+#' Futurama color scales
 #'
-#' See \code{\link{pal_futurama}} for details.
+#' See [pal_futurama()] for details.
 #'
 #' @inheritParams pal_futurama
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_futurama
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_futurama
 #'
diff --git a/R/discrete-igv.R b/R/discrete-igv.R
index ad70b2e..8923bb3 100644
--- a/R/discrete-igv.R
+++ b/R/discrete-igv.R
@@ -1,27 +1,26 @@
-#' Integrative Genomics Viewer (IGV) Color Palettes
+#' Integrative Genomics Viewer (IGV) color palettes
 #'
 #' Color palettes based on the colors used by
 #' Integrative Genomics Viewer (IGV).
 #'
 #' @param palette Palette type.
-#' There are two available options:
-#' \code{"default"} (51-color palette);
-#' \code{"alternating"} (2-color palette).
+#'   There are two available options:
+#'   - `"default"` (51-color palette).
+#'   - `"alternating"` (2-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_igv
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @references
 #' James T. Robinson, Helga Thorvaldsdóttir, Wendy Winckler,
 #' Mitchell Guttman, Eric S. Lander, Gad Getz, Jill P. Mesirov.
-#' Integrative Genomics Viewer. \emph{Nature Biotechnology} 29, 24--26 (2011).
+#' Integrative Genomics Viewer. _Nature Biotechnology_ 29, 24--26 (2011).
 #'
 #' @examples
 #' library("scales")
@@ -43,19 +42,18 @@ pal_igv <- function(palette = c("default", "alternating"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Integrative Genomics Viewer (IGV) Color Scales
+#' Integrative Genomics Viewer (IGV) color scales
 #'
-#' See \code{\link{pal_igv}} for details.
+#' See [pal_igv()] for details.
 #'
 #' @inheritParams pal_igv
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_igv
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_igv
 #'
diff --git a/R/discrete-jama.R b/R/discrete-jama.R
index 0d32bec..b194515 100644
--- a/R/discrete-jama.R
+++ b/R/discrete-jama.R
@@ -1,21 +1,20 @@
-#' Journal of the American Medical Association Color Palettes
+#' Journal of the American Medical Association color palettes
 #'
 #' Color palette inspired by plots in
-#' \emph{The Journal of the American Medical Association}.
+#' _The Journal of the American Medical Association_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (7-color palette).
+#'   Currently there is one available option: `"default"`
+#'   (7-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_jama
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -37,19 +36,18 @@ pal_jama <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Journal of the American Medical Association Color Scales
+#' Journal of the American Medical Association color scales
 #'
-#' See \code{\link{pal_jama}} for details.
+#' See [pal_jama()] for details.
 #'
 #' @inheritParams pal_jama
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_jama
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_jama
 #'
diff --git a/R/discrete-jco.R b/R/discrete-jco.R
index 0246c06..e45474b 100644
--- a/R/discrete-jco.R
+++ b/R/discrete-jco.R
@@ -1,20 +1,19 @@
-#' Journal of Clinical Oncology Color Palettes
+#' Journal of Clinical Oncology color palettes
 #'
-#' Color palette inspired by plots in \emph{Journal of Clinical Oncology}.
+#' Color palette inspired by plots in _Journal of Clinical Oncology_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (10-color palette).
+#'   Currently there is one available option: `"default"`
+#'   (10-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_jco
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -36,19 +35,18 @@ pal_jco <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Journal of Clinical Oncology Color Scales
+#' Journal of Clinical Oncology color scales
 #'
-#' See \code{\link{pal_jco}} for details.
+#' See [pal_jco()] for details.
 #'
 #' @inheritParams pal_jco
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_jco
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_jco
 #'
diff --git a/R/discrete-lancet.R b/R/discrete-lancet.R
index 48a909d..b0e62ad 100644
--- a/R/discrete-lancet.R
+++ b/R/discrete-lancet.R
@@ -1,21 +1,20 @@
-#' Lancet Journal Color Palettes
+#' Lancet journal color palettes
 #'
 #' Color palettes inspired by plots in Lancet journals,
-#' such as \emph{Lancet Oncology}.
+#' such as _Lancet Oncology_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"lanonc"}
-#' (9-color palette inspired by \emph{Lancet Oncology}).
+#'   Currently there is one available option: `"lanonc"`
+#'   (9-color palette inspired by _Lancet Oncology_).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_lancet
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -37,19 +36,18 @@ pal_lancet <- function(palette = c("lanonc"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Lancet Journal Color Scales
+#' Lancet journal color scales
 #'
-#' See \code{\link{pal_lancet}} for details.
+#' See [pal_lancet()] for details.
 #'
 #' @inheritParams pal_lancet
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_lancet
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_lancet
 #'
diff --git a/R/discrete-locuszoom.R b/R/discrete-locuszoom.R
index 3178517..54485e8 100644
--- a/R/discrete-locuszoom.R
+++ b/R/discrete-locuszoom.R
@@ -1,24 +1,23 @@
-#' LocusZoom Color Palette
+#' LocusZoom color palette
 #'
 #' Color palettes based on the colors used by LocusZoom.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (7-color palette).
+#'   Currently there is one available option: `"default"`
+#'   (7-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_locuszoom
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @references
 #' Pruim, Randall J., et al. (2010). LocusZoom: regional visualization of
-#' genome-wide association scan results. \emph{Bioinformatics},
+#' genome-wide association scan results. _Bioinformatics_,
 #' 26(18), 2336--2337.
 #'
 #' @examples
@@ -41,19 +40,18 @@ pal_locuszoom <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' LocusZoom Color Scales
+#' LocusZoom color scales
 #'
-#' See \code{\link{pal_locuszoom}} for details.
+#' See [pal_locuszoom()] for details.
 #'
 #' @inheritParams pal_locuszoom
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_locuszoom
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_locuszoom
 #'
diff --git a/R/discrete-nejm.R b/R/discrete-nejm.R
index 79191e3..56ac48b 100644
--- a/R/discrete-nejm.R
+++ b/R/discrete-nejm.R
@@ -1,21 +1,20 @@
-#' NEJM Color Palettes
+#' NEJM color palettes
 #'
 #' Color palette inspired by plots in
-#' \emph{The New England Journal of Medicine}.
+#' _The New England Journal of Medicine_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (8-color palette).
+#'   Currently there is one available option: `"default"`
+#'   (8-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_nejm
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -37,19 +36,18 @@ pal_nejm <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' NEJM Color Scales
+#' NEJM color scales
 #'
-#' See \code{\link{pal_nejm}} for details.
+#' See [pal_nejm()] for details.
 #'
 #' @inheritParams pal_nejm
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_nejm
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_nejm
 #'
diff --git a/R/discrete-npg.R b/R/discrete-npg.R
index 0d28077..dd2ecd7 100644
--- a/R/discrete-npg.R
+++ b/R/discrete-npg.R
@@ -1,21 +1,20 @@
-#' NPG Journal Color Palettes
+#' NPG journal color palettes
 #'
 #' Color palettes inspired by plots in journals published by
-#' Nature Publishing Group, such as \emph{Nature Reviews Cancer}.
+#' Nature Publishing Group, such as _Nature Reviews Cancer_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"nrc"}
-#' (10-color palette inspired by \emph{Nature Reviews Cancer}).
+#'   Currently there is one available option: `"nrc"`
+#'   (10-color palette inspired by _Nature Reviews Cancer_).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_npg
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -37,19 +36,18 @@ pal_npg <- function(palette = c("nrc"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' NPG Journal Color Scales
+#' NPG journal color scales
 #'
-#' See \code{\link{pal_npg}} for details.
+#' See [pal_npg()] for details.
 #'
 #' @inheritParams pal_npg
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_npg
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_npg
 #'
diff --git a/R/discrete-rickandmorty.R b/R/discrete-rickandmorty.R
index 157e8c6..bf44858 100644
--- a/R/discrete-rickandmorty.R
+++ b/R/discrete-rickandmorty.R
@@ -1,20 +1,19 @@
-#' Rick and Morty Color Palettes
+#' Rick and Morty color palettes
 #'
-#' Color palettes inspired by the colors used in \emph{Rick and Morty}.
+#' Color palettes inspired by the colors used in _Rick and Morty_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"schwifty"}
-#' (12-color palette).
+#'   Currently there is one available option: `"schwifty"`
+#'   (12-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_rickandmorty
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -36,19 +35,18 @@ pal_rickandmorty <- function(palette = c("schwifty"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Rick and Morty Color Scales
+#' Rick and Morty color scales
 #'
-#' See \code{\link{pal_rickandmorty}} for details.
+#' See [pal_rickandmorty()] for details.
 #'
 #' @inheritParams pal_rickandmorty
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_rickandmorty
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_rickandmorty
 #'
diff --git a/R/discrete-simpsons.R b/R/discrete-simpsons.R
index a92316d..516ed98 100644
--- a/R/discrete-simpsons.R
+++ b/R/discrete-simpsons.R
@@ -1,20 +1,19 @@
-#' The Simpsons Color Palettes
+#' The Simpsons color palettes
 #'
-#' Color palettes inspired by the colors used in \emph{The Simpsons}.
+#' Color palettes inspired by the colors used in _The Simpsons_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"springfield"}
-#' (16-color palette).
+#'   Currently there is one available option: `"springfield"`
+#'   (16-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_simpsons
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -36,19 +35,18 @@ pal_simpsons <- function(palette = c("springfield"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' The Simpsons Color Scales
+#' The Simpsons color scales
 #'
-#' See \code{\link{pal_simpsons}} for details.
+#' See [pal_simpsons()] for details.
 #'
 #' @inheritParams pal_simpsons
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_simpsons
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_simpsons
 #'
diff --git a/R/discrete-startrek.R b/R/discrete-startrek.R
index 2b53a86..fc6d183 100644
--- a/R/discrete-startrek.R
+++ b/R/discrete-startrek.R
@@ -1,20 +1,19 @@
-#' Star Trek Color Palettes
+#' Star Trek color palettes
 #'
-#' Color palettes inspired by the colors used in \emph{Star Trek}.
+#' Color palettes inspired by the colors used in _Star Trek_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"uniform"}
-#' (7-color palette).
+#'   Currently there is one available option: `"uniform"`
+#'   (7-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_startrek
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -36,19 +35,18 @@ pal_startrek <- function(palette = c("uniform"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Star Trek Color Scales
+#' Star Trek color scales
 #'
-#' See \code{\link{pal_startrek}} for details.
+#' See [pal_startrek()] for details.
 #'
 #' @inheritParams pal_startrek
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_startrek
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_startrek
 #'
diff --git a/R/discrete-tron.R b/R/discrete-tron.R
index cfb0cbd..746084e 100644
--- a/R/discrete-tron.R
+++ b/R/discrete-tron.R
@@ -1,20 +1,19 @@
-#' Tron Legacy Color Palettes
+#' Tron Legacy color palettes
 #'
-#' Color palettes inspired by the colors used in \emph{Tron Legacy}.
+#' Color palettes inspired by the colors used in _Tron Legacy_.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"legacy"}
-#' (7-color palette).
+#'   Currently there is one available option: `"legacy"`
+#'   (7-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_tron
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -36,19 +35,18 @@ pal_tron <- function(palette = c("legacy"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' Tron Legacy Color Scales
+#' Tron Legacy color scales
 #'
-#' See \code{\link{pal_tron}} for details.
+#' See [pal_tron()] for details.
 #'
 #' @inheritParams pal_tron
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_tron
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_tron
 #'
diff --git a/R/discrete-uchicago.R b/R/discrete-uchicago.R
index ac360e0..2e998c4 100644
--- a/R/discrete-uchicago.R
+++ b/R/discrete-uchicago.R
@@ -1,24 +1,24 @@
-#' The University of Chicago Color Palettes
+#' The University of Chicago color palettes
 #'
 #' Color palettes based on the colors used by the University of Chicago.
 #'
 #' @param palette Palette type.
-#' There are 3 available options:
-#' \code{"default"} (9-color palette);
-#' \code{"light"} (9-color light palette);
-#' \code{"dark"} (9-color dark palette).
+#'   There are three available options:
+#'   - `"default"` (9-color palette);
+#'   - `"light"` (9-color light palette);
+#'   - `"dark"` (9-color dark palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_uchicago
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
-#' @references \url{https://news.uchicago.edu/sites/default/files/attachments/_uchicago.identity.guidelines.pdf}
+#' @references
+#' <https://news.uchicago.edu/sites/default/files/attachments/_uchicago.identity.guidelines.pdf>
 #'
 #' @examples
 #' library("scales")
@@ -41,21 +41,21 @@ pal_uchicago <- function(palette = c("default", "light", "dark"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' The University of Chicago Color Scales
+#' The University of Chicago color scales
 #'
-#' See \code{\link{pal_uchicago}} for details.
+#' See [pal_uchicago()] for details.
 #'
 #' @inheritParams pal_uchicago
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_uchicago
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
-#' @references \url{https://news.uchicago.edu/sites/default/files/attachments/_uchicago.identity.guidelines.pdf}
+#' @references
+#' <https://news.uchicago.edu/sites/default/files/attachments/_uchicago.identity.guidelines.pdf>
 #'
 #' @rdname scale_uchicago
 #'
diff --git a/R/discrete-ucscgb.R b/R/discrete-ucscgb.R
index 50352e9..9f4fae2 100644
--- a/R/discrete-ucscgb.R
+++ b/R/discrete-ucscgb.R
@@ -1,20 +1,19 @@
-#' UCSC Genome Browser Color Palette
+#' UCSC Genome Browser color palette
 #'
 #' Color palette from UCSC Genome Browser chromosome colors.
 #'
 #' @param palette Palette type.
-#' Currently there is one available option: \code{"default"}
-#' (26-color palette).
+#'   Currently there is one available option: `"default"`
+#'   (26-color palette).
 #' @param alpha Transparency level, a real number in (0, 1].
-#' See \code{alpha} in \code{\link[grDevices]{rgb}} for details.
+#'   See `alpha` in [grDevices::rgb()] for details.
 #'
 #' @export pal_ucscgb
 #'
 #' @importFrom grDevices col2rgb rgb
 #' @importFrom scales manual_pal
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @examples
 #' library("scales")
@@ -36,19 +35,18 @@ pal_ucscgb <- function(palette = c("default"), alpha = 1) {
   manual_pal(unname(alpha_cols))
 }
 
-#' UCSC Genome Browser Color Scales
+#' UCSC Genome Browser color scales
 #'
-#' See \code{\link{pal_ucscgb}} for details.
+#' See [pal_ucscgb()] for details.
 #'
 #' @inheritParams pal_ucscgb
-#' @param ... additional parameters for \code{\link[ggplot2]{discrete_scale}}
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
 #'
 #' @export scale_color_ucscgb
 #'
 #' @importFrom ggplot2 discrete_scale
 #'
-#' @author Nan Xiao <\email{me@@nanx.me}> |
-#' <\href{https://nanx.me}{https://nanx.me}>
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
 #'
 #' @rdname scale_ucscgb
 #'
diff --git a/inst/WORDLIST b/inst/WORDLIST
new file mode 100644
index 0000000..ad94f45
--- /dev/null
+++ b/inst/WORDLIST
@@ -0,0 +1,44 @@
+AAAS
+BMJ
+Bioinformatics
+CMD
+Catalogue
+Circos
+ColorBrewer
+Fi
+Futurama
+GSEA
+GenePattern
+Getz
+Guttman
+Hanahan
+HeatMapImage
+IGV
+JAMA
+JCO
+LocusZoom
+Mesirov
+Morty
+NEJM
+NPG
+ORCID
+Pruim
+RStudio
+SSL
+Schwifty
+Thorvaldsdóttir
+Translational
+UCSC
+UCSCGB
+UChicago
+UI
+Winckler
+al
+et
+ggplot
+jhrcook
+js
+pandoc
+pngquant
+ragg
+viridis
diff --git a/man/pal_aaas.Rd b/man/pal_aaas.Rd
index 1e73546..33bc3e3 100644
--- a/man/pal_aaas.Rd
+++ b/man/pal_aaas.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-aaas.R
 \name{pal_aaas}
 \alias{pal_aaas}
-\title{AAAS Journal Color Palettes}
+\title{AAAS journal color palettes}
 \usage{
 pal_aaas(palette = c("default"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"default"}
 (10-color palette inspired by \emph{Science}).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by plots in journals published by
@@ -25,6 +25,5 @@ show_col(pal_aaas("default")(10))
 show_col(pal_aaas("default", alpha = 0.6)(10))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_bmj.Rd b/man/pal_bmj.Rd
index 599dc8c..0e64622 100644
--- a/man/pal_bmj.Rd
+++ b/man/pal_bmj.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-bmj.R
 \name{pal_bmj}
 \alias{pal_bmj}
-\title{BMJ Color Palettes}
+\title{BMJ color palettes}
 \usage{
 pal_bmj(palette = c("default"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"default"}
 (9-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palette from the BMJ living style guide.
@@ -22,6 +22,9 @@ library("scales")
 show_col(pal_bmj("default")(9))
 show_col(pal_bmj("default", alpha = 0.6)(9))
 }
+\references{
+\url{https://technology.bmj.com/living-style-guide/colour.html}
+}
 \author{
-Hui Chen <\email{huichen@zju.edu.cn}>
+Hui Chen | \email{huichen@zju.edu.cn}
 }
diff --git a/man/pal_cosmic.Rd b/man/pal_cosmic.Rd
index 57e7ad0..807bc75 100644
--- a/man/pal_cosmic.Rd
+++ b/man/pal_cosmic.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-cosmic.R
 \name{pal_cosmic}
 \alias{pal_cosmic}
-\title{COSMIC Color Palettes}
+\title{COSMIC color palettes}
 \usage{
 pal_cosmic(
   palette = c("hallmarks_light", "hallmarks_dark", "signature_substitutions"),
@@ -11,18 +11,21 @@ pal_cosmic(
 }
 \arguments{
 \item{palette}{Palette type. Currently there are three available options:
-\code{"signature_substitutions"} (6-color palette),
-\code{"hallmarks_light"} (10-color palette), and \code{"hallmarks_dark"}
-(10-color palette). The \code{"hallmarks_light"} option is from
+\itemize{
+\item \code{"signature_substitutions"} (6-color palette).
+\item \code{"hallmarks_light"} (10-color palette).
+\item \code{"hallmarks_dark"} (10-color palette).
+}
+
+The \code{"hallmarks_light"} option is from
 \href{https://pubmed.ncbi.nlm.nih.gov/21376230/}{Hanahan and Weinberg (2011)}.}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by the colors used in projects from the
-\href{https://cancer.sanger.ac.uk/cosmic}{Catalogue Of
-Somatic Mutations in Cancers (COSMIC)}
+\href{https://cancer.sanger.ac.uk/cosmic}{Catalogue Of Somatic Mutations in Cancers (COSMIC)}.
 }
 \examples{
 library("scales")
@@ -34,6 +37,6 @@ show_col(pal_cosmic("signature_substitutions")(6))
 show_col(pal_cosmic("signature_substitutions", alpha = 0.6)(6))
 }
 \author{
-Joshua H. Cook <\email{joshuacook0023@gmail.com}> |
-<\href{https://github.com/jhrcook}{GitHub/jhrcook}>
+Joshua H. Cook | \email{joshuacook0023@gmail.com} |
+\href{https://github.com/jhrcook}{@jhrcook}
 }
diff --git a/man/pal_d3.Rd b/man/pal_d3.Rd
index 7a308d2..c39ccb6 100644
--- a/man/pal_d3.Rd
+++ b/man/pal_d3.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-d3.R
 \name{pal_d3}
 \alias{pal_d3}
-\title{D3.js Color Palettes}
+\title{D3.js color palettes}
 \usage{
 pal_d3(
   palette = c("category10", "category20", "category20b", "category20c"),
@@ -10,15 +10,16 @@ pal_d3(
 )
 }
 \arguments{
-\item{palette}{Palette type.
-There are 4 available options:
-\code{"category10"} (10-color palette);
-\code{"category20"} (20-color palette);
-\code{"category20b"} (20-color palette);
-\code{"category20c"} (20-color palette).}
+\item{palette}{Palette type. There are four available options:
+\itemize{
+\item \code{"category10"} (10-color palette).
+\item \code{"category20"} (20-color palette).
+\item \code{"category20b"} (20-color palette).
+\item \code{"category20c"} (20-color palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes based on the colors used by D3.js.
@@ -34,6 +35,5 @@ show_col(pal_d3("category20c")(20))
 \url{https://github.com/d3/d3-3.x-api-reference/blob/master/Ordinal-Scales.md}
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_flatui.Rd b/man/pal_flatui.Rd
index 0fbae24..5e7a8d4 100644
--- a/man/pal_flatui.Rd
+++ b/man/pal_flatui.Rd
@@ -2,22 +2,23 @@
 % Please edit documentation in R/discrete-flatui.R
 \name{pal_flatui}
 \alias{pal_flatui}
-\title{Flat UI Color Palettes}
+\title{Flat UI color palettes}
 \usage{
 pal_flatui(palette = c("default", "flattastic", "aussie"), alpha = 1)
 }
 \arguments{
-\item{palette}{Palette type.
-Currently there are three available option:
-\code{"default"} (10-color palette).
-\code{"flattastic"} (12-color palette).
-\code{"aussie"} (10-color palette).}
+\item{palette}{Palette type. Currently there are three available options:
+\itemize{
+\item \code{"default"} (10-color palette).
+\item \code{"flattastic"} (12-color palette).
+\item \code{"aussie"} (10-color palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
-Color palettes inspired by the colors used in \emph{Flat UI Colors}.
+Color palettes inspired by the Flat UI colors.
 }
 \examples{
 library("scales")
@@ -27,5 +28,5 @@ show_col(pal_flatui("aussie")(10))
 show_col(pal_flatui("aussie", alpha = 0.6)(10))
 }
 \author{
-Clara Jégousse <\email{cat3@hi.is}>
+Clara Jégousse | \email{cat3@hi.is}
 }
diff --git a/man/pal_frontiers.Rd b/man/pal_frontiers.Rd
index 721cda1..c3e4e7e 100644
--- a/man/pal_frontiers.Rd
+++ b/man/pal_frontiers.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-frontiers.R
 \name{pal_frontiers}
 \alias{pal_frontiers}
-\title{Frontiers Color Palettes}
+\title{Frontiers journal color palettes}
 \usage{
 pal_frontiers(palette = c("default"), alpha = 1)
 }
@@ -12,10 +12,10 @@ Currently there is one available option: \code{"default"}
 (10-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
-Color palettes inspired by the colors used in \emph{Frontiers}.
+Color palettes inspired by the colors used in \emph{Frontiers} journals.
 }
 \examples{
 library("scales")
@@ -23,5 +23,5 @@ show_col(pal_frontiers("default")(7))
 show_col(pal_frontiers("default", alpha = 0.6)(7))
 }
 \author{
-Clara Jégousse <\email{cat3@hi.is}>
+Clara Jégousse | \email{cat3@hi.is}
 }
diff --git a/man/pal_futurama.Rd b/man/pal_futurama.Rd
index 71f0604..b1227c3 100644
--- a/man/pal_futurama.Rd
+++ b/man/pal_futurama.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-futurama.R
 \name{pal_futurama}
 \alias{pal_futurama}
-\title{The Futurama Color Palettes}
+\title{Futurama color palettes}
 \usage{
 pal_futurama(palette = c("planetexpress"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"planetexpress"}
 (12-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by the colors used in \emph{Futurama}.
@@ -23,6 +23,5 @@ show_col(pal_futurama("planetexpress")(12))
 show_col(pal_futurama("planetexpress", alpha = 0.6)(12))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_gsea.Rd b/man/pal_gsea.Rd
index 4227bc6..b465480 100644
--- a/man/pal_gsea.Rd
+++ b/man/pal_gsea.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/continuous-gsea.R
 \name{pal_gsea}
 \alias{pal_gsea}
-\title{The GSEA GenePattern Color Palettes}
+\title{The GSEA GenePattern color palettes}
 \usage{
 pal_gsea(palette = c("default"), n = 12, alpha = 1, reverse = FALSE)
 }
@@ -14,7 +14,7 @@ Currently there is one available option: \code{"default"}
 \item{n}{Number of individual colors to be generated.}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 }
@@ -28,6 +28,5 @@ show_col(pal_gsea("default")(12))
 show_col(pal_gsea("default", n = 30, alpha = 0.6, reverse = TRUE)(30))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_igv.Rd b/man/pal_igv.Rd
index 376187e..d537e59 100644
--- a/man/pal_igv.Rd
+++ b/man/pal_igv.Rd
@@ -2,18 +2,20 @@
 % Please edit documentation in R/discrete-igv.R
 \name{pal_igv}
 \alias{pal_igv}
-\title{Integrative Genomics Viewer (IGV) Color Palettes}
+\title{Integrative Genomics Viewer (IGV) color palettes}
 \usage{
 pal_igv(palette = c("default", "alternating"), alpha = 1)
 }
 \arguments{
 \item{palette}{Palette type.
 There are two available options:
-\code{"default"} (51-color palette);
-\code{"alternating"} (2-color palette).}
+\itemize{
+\item \code{"default"} (51-color palette).
+\item \code{"alternating"} (2-color palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes based on the colors used by
@@ -30,6 +32,5 @@ Mitchell Guttman, Eric S. Lander, Gad Getz, Jill P. Mesirov.
 Integrative Genomics Viewer. \emph{Nature Biotechnology} 29, 24--26 (2011).
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_jama.Rd b/man/pal_jama.Rd
index ed04b9b..356d7e7 100644
--- a/man/pal_jama.Rd
+++ b/man/pal_jama.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-jama.R
 \name{pal_jama}
 \alias{pal_jama}
-\title{Journal of the American Medical Association Color Palettes}
+\title{Journal of the American Medical Association color palettes}
 \usage{
 pal_jama(palette = c("default"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"default"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palette inspired by plots in
@@ -24,6 +24,5 @@ show_col(pal_jama("default")(7))
 show_col(pal_jama("default", alpha = 0.6)(7))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_jco.Rd b/man/pal_jco.Rd
index b95e443..1a5dfd0 100644
--- a/man/pal_jco.Rd
+++ b/man/pal_jco.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-jco.R
 \name{pal_jco}
 \alias{pal_jco}
-\title{Journal of Clinical Oncology Color Palettes}
+\title{Journal of Clinical Oncology color palettes}
 \usage{
 pal_jco(palette = c("default"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"default"}
 (10-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palette inspired by plots in \emph{Journal of Clinical Oncology}.
@@ -23,6 +23,5 @@ show_col(pal_jco("default")(10))
 show_col(pal_jco("default", alpha = 0.6)(10))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_lancet.Rd b/man/pal_lancet.Rd
index 9258f4d..c3f06b9 100644
--- a/man/pal_lancet.Rd
+++ b/man/pal_lancet.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-lancet.R
 \name{pal_lancet}
 \alias{pal_lancet}
-\title{Lancet Journal Color Palettes}
+\title{Lancet journal color palettes}
 \usage{
 pal_lancet(palette = c("lanonc"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"lanonc"}
 (9-color palette inspired by \emph{Lancet Oncology}).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by plots in Lancet journals,
@@ -24,6 +24,5 @@ show_col(pal_lancet("lanonc")(9))
 show_col(pal_lancet("lanonc", alpha = 0.6)(9))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_locuszoom.Rd b/man/pal_locuszoom.Rd
index b435c71..3b9a5ff 100644
--- a/man/pal_locuszoom.Rd
+++ b/man/pal_locuszoom.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-locuszoom.R
 \name{pal_locuszoom}
 \alias{pal_locuszoom}
-\title{LocusZoom Color Palette}
+\title{LocusZoom color palette}
 \usage{
 pal_locuszoom(palette = c("default"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"default"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes based on the colors used by LocusZoom.
@@ -28,6 +28,5 @@ genome-wide association scan results. \emph{Bioinformatics},
 26(18), 2336--2337.
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_material.Rd b/man/pal_material.Rd
index 3f7dd77..86cbb1d 100644
--- a/man/pal_material.Rd
+++ b/man/pal_material.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/continuous-material.R
 \name{pal_material}
 \alias{pal_material}
-\title{Material Design Color Palettes}
+\title{Material Design color palettes}
 \usage{
 pal_material(
   palette = c("red", "pink", "purple", "deep-purple", "indigo", "blue", "light-blue",
@@ -14,8 +14,7 @@ pal_material(
 )
 }
 \arguments{
-\item{palette}{Palette type.
-There are 19 available options:
+\item{palette}{Palette type. There are 19 available options:
 \itemize{
 \item \code{"red"}
 \item \code{"pink"}
@@ -35,19 +34,20 @@ There are 19 available options:
 \item \code{"deep-orange"}
 \item \code{"brown"}
 \item \code{"grey"}
-\item \code{"blue-grey"}}
-See \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}
-for details.}
+\item \code{"blue-grey"}
+}
+
+For details, see \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}.}
 
 \item{n}{Number of individual colors to be generated.}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 }
 \description{
-The Material Design color palettes.
+The Material Design 2 color palettes.
 }
 \examples{
 library("scales")
@@ -55,6 +55,5 @@ show_col(pal_material("indigo")(10))
 show_col(pal_material("indigo", n = 30, alpha = 0.6, reverse = TRUE)(30))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_nejm.Rd b/man/pal_nejm.Rd
index ddf9c03..d789ab6 100644
--- a/man/pal_nejm.Rd
+++ b/man/pal_nejm.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-nejm.R
 \name{pal_nejm}
 \alias{pal_nejm}
-\title{NEJM Color Palettes}
+\title{NEJM color palettes}
 \usage{
 pal_nejm(palette = c("default"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"default"}
 (8-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palette inspired by plots in
@@ -24,6 +24,5 @@ show_col(pal_nejm("default")(8))
 show_col(pal_nejm("default", alpha = 0.6)(8))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_npg.Rd b/man/pal_npg.Rd
index 0b62dcc..d162cfe 100644
--- a/man/pal_npg.Rd
+++ b/man/pal_npg.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-npg.R
 \name{pal_npg}
 \alias{pal_npg}
-\title{NPG Journal Color Palettes}
+\title{NPG journal color palettes}
 \usage{
 pal_npg(palette = c("nrc"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"nrc"}
 (10-color palette inspired by \emph{Nature Reviews Cancer}).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by plots in journals published by
@@ -24,6 +24,5 @@ show_col(pal_npg("nrc")(10))
 show_col(pal_npg("nrc", alpha = 0.6)(10))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_rickandmorty.Rd b/man/pal_rickandmorty.Rd
index 7c9994f..a351e5f 100644
--- a/man/pal_rickandmorty.Rd
+++ b/man/pal_rickandmorty.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-rickandmorty.R
 \name{pal_rickandmorty}
 \alias{pal_rickandmorty}
-\title{Rick and Morty Color Palettes}
+\title{Rick and Morty color palettes}
 \usage{
 pal_rickandmorty(palette = c("schwifty"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"schwifty"}
 (12-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by the colors used in \emph{Rick and Morty}.
@@ -23,6 +23,5 @@ show_col(pal_rickandmorty("schwifty")(12))
 show_col(pal_rickandmorty("schwifty", alpha = 0.6)(12))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_simpsons.Rd b/man/pal_simpsons.Rd
index 700ff2a..4bdd990 100644
--- a/man/pal_simpsons.Rd
+++ b/man/pal_simpsons.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-simpsons.R
 \name{pal_simpsons}
 \alias{pal_simpsons}
-\title{The Simpsons Color Palettes}
+\title{The Simpsons color palettes}
 \usage{
 pal_simpsons(palette = c("springfield"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"springfield"}
 (16-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by the colors used in \emph{The Simpsons}.
@@ -23,6 +23,5 @@ show_col(pal_simpsons("springfield")(16))
 show_col(pal_simpsons("springfield", alpha = 0.6)(16))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_startrek.Rd b/man/pal_startrek.Rd
index 9d37a8f..66df8bc 100644
--- a/man/pal_startrek.Rd
+++ b/man/pal_startrek.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-startrek.R
 \name{pal_startrek}
 \alias{pal_startrek}
-\title{Star Trek Color Palettes}
+\title{Star Trek color palettes}
 \usage{
 pal_startrek(palette = c("uniform"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"uniform"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by the colors used in \emph{Star Trek}.
@@ -23,6 +23,5 @@ show_col(pal_startrek("uniform")(7))
 show_col(pal_startrek("uniform", alpha = 0.6)(7))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_tron.Rd b/man/pal_tron.Rd
index 0d73704..a26a8ca 100644
--- a/man/pal_tron.Rd
+++ b/man/pal_tron.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-tron.R
 \name{pal_tron}
 \alias{pal_tron}
-\title{Tron Legacy Color Palettes}
+\title{Tron Legacy color palettes}
 \usage{
 pal_tron(palette = c("legacy"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"legacy"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes inspired by the colors used in \emph{Tron Legacy}.
@@ -23,6 +23,5 @@ show_col(pal_tron("legacy")(7))
 show_col(pal_tron("legacy", alpha = 0.6)(7))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_uchicago.Rd b/man/pal_uchicago.Rd
index f6f3d5a..50f6aac 100644
--- a/man/pal_uchicago.Rd
+++ b/man/pal_uchicago.Rd
@@ -2,19 +2,21 @@
 % Please edit documentation in R/discrete-uchicago.R
 \name{pal_uchicago}
 \alias{pal_uchicago}
-\title{The University of Chicago Color Palettes}
+\title{The University of Chicago color palettes}
 \usage{
 pal_uchicago(palette = c("default", "light", "dark"), alpha = 1)
 }
 \arguments{
 \item{palette}{Palette type.
-There are 3 available options:
-\code{"default"} (9-color palette);
-\code{"light"} (9-color light palette);
-\code{"dark"} (9-color dark palette).}
+There are three available options:
+\itemize{
+\item \code{"default"} (9-color palette);
+\item \code{"light"} (9-color light palette);
+\item \code{"dark"} (9-color dark palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palettes based on the colors used by the University of Chicago.
@@ -29,6 +31,5 @@ show_col(pal_uchicago("dark")(9))
 \url{https://news.uchicago.edu/sites/default/files/attachments/_uchicago.identity.guidelines.pdf}
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/pal_ucscgb.Rd b/man/pal_ucscgb.Rd
index fc8d684..0e7c220 100644
--- a/man/pal_ucscgb.Rd
+++ b/man/pal_ucscgb.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/discrete-ucscgb.R
 \name{pal_ucscgb}
 \alias{pal_ucscgb}
-\title{UCSC Genome Browser Color Palette}
+\title{UCSC Genome Browser color palette}
 \usage{
 pal_ucscgb(palette = c("default"), alpha = 1)
 }
@@ -12,7 +12,7 @@ Currently there is one available option: \code{"default"}
 (26-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 }
 \description{
 Color palette from UCSC Genome Browser chromosome colors.
@@ -23,6 +23,5 @@ show_col(pal_ucscgb("default")(26))
 show_col(pal_ucscgb("default", alpha = 0.6)(26))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/rgb_gsea.Rd b/man/rgb_gsea.Rd
index 3a8fca7..13efc9f 100644
--- a/man/rgb_gsea.Rd
+++ b/man/rgb_gsea.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/continuous-gsea.R
 \name{rgb_gsea}
 \alias{rgb_gsea}
-\title{The GSEA GenePattern Color Palettes}
+\title{The GSEA GenePattern color palettes}
 \usage{
 rgb_gsea(palette = c("default"), n = 12, alpha = 1, reverse = FALSE)
 }
@@ -14,7 +14,7 @@ Currently there is one available option: \code{"default"}
 \item{n}{Number of individual colors to be generated.}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 }
@@ -32,6 +32,5 @@ show_col(pal_gsea("default")(12))
 show_col(pal_gsea("default", n = 30, alpha = 0.6, reverse = TRUE)(30))
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/rgb_material.Rd b/man/rgb_material.Rd
index ba43d62..43682d1 100644
--- a/man/rgb_material.Rd
+++ b/man/rgb_material.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/continuous-material.R
 \name{rgb_material}
 \alias{rgb_material}
-\title{Material Design Color Palettes}
+\title{Material Design color palettes}
 \usage{
 rgb_material(
   palette = c("red", "pink", "purple", "deep-purple", "indigo", "blue", "light-blue",
@@ -14,8 +14,7 @@ rgb_material(
 )
 }
 \arguments{
-\item{palette}{Palette type.
-There are 19 available options:
+\item{palette}{Palette type. There are 19 available options:
 \itemize{
 \item \code{"red"}
 \item \code{"pink"}
@@ -35,19 +34,20 @@ There are 19 available options:
 \item \code{"deep-orange"}
 \item \code{"brown"}
 \item \code{"grey"}
-\item \code{"blue-grey"}}
-See \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}
-for details.}
+\item \code{"blue-grey"}
+}
+
+For details, see \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}.}
 
 \item{n}{Number of individual colors to be generated.}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 }
 \description{
-The Material Design color palettes.
+The Material Design 2 color palettes.
 }
 \examples{
 library("scales")
@@ -58,6 +58,5 @@ show_col(pal_material("indigo", n = 30, alpha = 0.6, reverse = TRUE)(30))
 \url{https://m2.material.io/design/color/the-color-system.html}
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_aaas.Rd b/man/scale_aaas.Rd
index 76d7ea7..78d1f91 100644
--- a/man/scale_aaas.Rd
+++ b/man/scale_aaas.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_aaas}
 \alias{scale_colour_aaas}
 \alias{scale_fill_aaas}
-\title{AAAS Journal Color Scales}
+\title{AAAS journal color scales}
 \usage{
 scale_color_aaas(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (10-color palette inspired by \emph{Science}).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_aaas}} for details.
+See \code{\link[=pal_aaas]{pal_aaas()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_aaas()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_bmj.Rd b/man/scale_bmj.Rd
index 489851e..3470045 100644
--- a/man/scale_bmj.Rd
+++ b/man/scale_bmj.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_bmj}
 \alias{scale_colour_bmj}
 \alias{scale_fill_bmj}
-\title{BMJ Color Scales}
+\title{BMJ color scales}
 \usage{
 scale_color_bmj(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (9-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_bmj}} for details.
+See \code{\link[=pal_bmj]{pal_bmj()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -46,6 +46,9 @@ ggplot(
   theme_bw() +
   scale_fill_bmj()
 }
+\references{
+\url{https://technology.bmj.com/living-style-guide/colour.html}
+}
 \author{
-Hui Chen <\email{huichen@zju.edu.cn}>
+Hui Chen | \email{huichen@zju.edu.cn}
 }
diff --git a/man/scale_cosmic.Rd b/man/scale_cosmic.Rd
index 08a7b4e..aa8cacb 100644
--- a/man/scale_cosmic.Rd
+++ b/man/scale_cosmic.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_cosmic}
 \alias{scale_colour_cosmic}
 \alias{scale_fill_cosmic}
-\title{COSMIC Color Scales}
+\title{COSMIC color scales}
 \usage{
 scale_color_cosmic(
   palette = c("hallmarks_light", "hallmarks_dark", "signature_substitutions"),
@@ -26,18 +26,22 @@ scale_fill_cosmic(
 }
 \arguments{
 \item{palette}{Palette type. Currently there are three available options:
-\code{"signature_substitutions"} (6-color palette),
-\code{"hallmarks_light"} (10-color palette), and \code{"hallmarks_dark"}
-(10-color palette). The \code{"hallmarks_light"} option is from
+\itemize{
+\item \code{"signature_substitutions"} (6-color palette).
+\item \code{"hallmarks_light"} (10-color palette).
+\item \code{"hallmarks_dark"} (10-color palette).
+}
+
+The \code{"hallmarks_light"} option is from
 \href{https://pubmed.ncbi.nlm.nih.gov/21376230/}{Hanahan and Weinberg (2011)}.}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_cosmic}} for details.
+See \code{\link[=pal_cosmic]{pal_cosmic()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -61,6 +65,6 @@ ggplot(
   scale_fill_cosmic()
 }
 \author{
-Joshua H. Cook <\email{joshuacook0023@gmail.com}> |
-<\href{https://github.com/jhrcook}{GitHub/jhrcook}>
+Joshua H. Cook | \email{joshuacook0023@gmail.com} |
+\href{https://github.com/jhrcook}{@jhrcook}
 }
diff --git a/man/scale_d3.Rd b/man/scale_d3.Rd
index 6fd19e8..7b4daac 100644
--- a/man/scale_d3.Rd
+++ b/man/scale_d3.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_d3}
 \alias{scale_colour_d3}
 \alias{scale_fill_d3}
-\title{D3.js Color Scales}
+\title{D3.js color scales}
 \usage{
 scale_color_d3(
   palette = c("category10", "category20", "category20b", "category20c"),
@@ -25,20 +25,21 @@ scale_fill_d3(
 )
 }
 \arguments{
-\item{palette}{Palette type.
-There are 4 available options:
-\code{"category10"} (10-color palette);
-\code{"category20"} (20-color palette);
-\code{"category20b"} (20-color palette);
-\code{"category20c"} (20-color palette).}
+\item{palette}{Palette type. There are four available options:
+\itemize{
+\item \code{"category10"} (10-color palette).
+\item \code{"category20"} (20-color palette).
+\item \code{"category20b"} (20-color palette).
+\item \code{"category20c"} (20-color palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_d3}} for details.
+See \code{\link[=pal_d3]{pal_d3()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -75,6 +76,5 @@ p2 + scale_fill_d3(palette = "category20c")
 \url{https://github.com/d3/d3-3.x-api-reference/blob/master/Ordinal-Scales.md}
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_flatui.Rd b/man/scale_flatui.Rd
index a3a823e..e7e5fcd 100644
--- a/man/scale_flatui.Rd
+++ b/man/scale_flatui.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_flatui}
 \alias{scale_colour_flatui}
 \alias{scale_fill_flatui}
-\title{Flat UI Color Scales}
+\title{Flat UI color scales}
 \usage{
 scale_color_flatui(
   palette = c("default", "flattastic", "aussie"),
@@ -25,19 +25,20 @@ scale_fill_flatui(
 )
 }
 \arguments{
-\item{palette}{Palette type.
-Currently there are three available option:
-\code{"default"} (10-color palette).
-\code{"flattastic"} (12-color palette).
-\code{"aussie"} (10-color palette).}
+\item{palette}{Palette type. Currently there are three available options:
+\itemize{
+\item \code{"default"} (10-color palette).
+\item \code{"flattastic"} (12-color palette).
+\item \code{"aussie"} (10-color palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_flatui}} for details.
+See \code{\link[=pal_flatui]{pal_flatui()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -71,5 +72,5 @@ p1 + scale_color_flatui(palette = "aussie")
 p2 + scale_fill_flatui(palette = "aussie")
 }
 \author{
-Clara Jégousse <\email{cat3@hi.is}>
+Clara Jégousse | \email{cat3@hi.is}
 }
diff --git a/man/scale_frontiers.Rd b/man/scale_frontiers.Rd
index 1221889..6f864ca 100644
--- a/man/scale_frontiers.Rd
+++ b/man/scale_frontiers.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_frontiers}
 \alias{scale_colour_frontiers}
 \alias{scale_fill_frontiers}
-\title{Frontiers Color Scales}
+\title{Frontiers journal color scales}
 \usage{
 scale_color_frontiers(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (10-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_frontiers}} for details.
+See \code{\link[=pal_frontiers]{pal_frontiers()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -54,5 +54,5 @@ ggplot(
   scale_fill_frontiers()
 }
 \author{
-Clara Jégousse <\email{cat3@hi.is}>
+Clara Jégousse | \email{cat3@hi.is}
 }
diff --git a/man/scale_futurama.Rd b/man/scale_futurama.Rd
index 31b7a39..82692cd 100644
--- a/man/scale_futurama.Rd
+++ b/man/scale_futurama.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_futurama}
 \alias{scale_colour_futurama}
 \alias{scale_fill_futurama}
-\title{The Futurama Color Scales}
+\title{Futurama color scales}
 \usage{
 scale_color_futurama(palette = c("planetexpress"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"planetexpress"}
 (12-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_futurama}} for details.
+See \code{\link[=pal_futurama]{pal_futurama()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_futurama()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_gsea.Rd b/man/scale_gsea.Rd
index 45e89a1..6a2617a 100644
--- a/man/scale_gsea.Rd
+++ b/man/scale_gsea.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_gsea}
 \alias{scale_colour_gsea}
 \alias{scale_fill_gsea}
-\title{The GSEA GenePattern Color Scales}
+\title{The GSEA GenePattern color scales}
 \usage{
 scale_color_gsea(palette = c("default"), alpha = 1, reverse = FALSE, ...)
 
@@ -18,14 +18,14 @@ Currently there is one available option: \code{"default"}
 (continuous palette with 12 base colors).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_gsea}} for details.
+See \code{\link[=pal_gsea]{pal_gsea()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -44,6 +44,5 @@ ggplot(
   scale_fill_gsea()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_igv.Rd b/man/scale_igv.Rd
index feb7eaf..ac8229a 100644
--- a/man/scale_igv.Rd
+++ b/man/scale_igv.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_igv}
 \alias{scale_colour_igv}
 \alias{scale_fill_igv}
-\title{Integrative Genomics Viewer (IGV) Color Scales}
+\title{Integrative Genomics Viewer (IGV) color scales}
 \usage{
 scale_color_igv(palette = c("default", "alternating"), alpha = 1, ...)
 
@@ -15,16 +15,18 @@ scale_fill_igv(palette = c("default", "alternating"), alpha = 1, ...)
 \arguments{
 \item{palette}{Palette type.
 There are two available options:
-\code{"default"} (51-color palette);
-\code{"alternating"} (2-color palette).}
+\itemize{
+\item \code{"default"} (51-color palette).
+\item \code{"alternating"} (2-color palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_igv}} for details.
+See \code{\link[=pal_igv]{pal_igv()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -56,6 +58,5 @@ p2 + scale_fill_manual(
 )
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_jama.Rd b/man/scale_jama.Rd
index 1831ff3..8490ff3 100644
--- a/man/scale_jama.Rd
+++ b/man/scale_jama.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_jama}
 \alias{scale_colour_jama}
 \alias{scale_fill_jama}
-\title{Journal of the American Medical Association Color Scales}
+\title{Journal of the American Medical Association color scales}
 \usage{
 scale_color_jama(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_jama}} for details.
+See \code{\link[=pal_jama]{pal_jama()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_jama()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_jco.Rd b/man/scale_jco.Rd
index fbb5a4e..95b2216 100644
--- a/man/scale_jco.Rd
+++ b/man/scale_jco.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_jco}
 \alias{scale_colour_jco}
 \alias{scale_fill_jco}
-\title{Journal of Clinical Oncology Color Scales}
+\title{Journal of Clinical Oncology color scales}
 \usage{
 scale_color_jco(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (10-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_jco}} for details.
+See \code{\link[=pal_jco]{pal_jco()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_jco()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_lancet.Rd b/man/scale_lancet.Rd
index f42d332..267e353 100644
--- a/man/scale_lancet.Rd
+++ b/man/scale_lancet.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_lancet}
 \alias{scale_colour_lancet}
 \alias{scale_fill_lancet}
-\title{Lancet Journal Color Scales}
+\title{Lancet journal color scales}
 \usage{
 scale_color_lancet(palette = c("lanonc"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"lanonc"}
 (9-color palette inspired by \emph{Lancet Oncology}).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_lancet}} for details.
+See \code{\link[=pal_lancet]{pal_lancet()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_lancet()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_locuszoom.Rd b/man/scale_locuszoom.Rd
index e01fa45..d478f0f 100644
--- a/man/scale_locuszoom.Rd
+++ b/man/scale_locuszoom.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_locuszoom}
 \alias{scale_colour_locuszoom}
 \alias{scale_fill_locuszoom}
-\title{LocusZoom Color Scales}
+\title{LocusZoom color scales}
 \usage{
 scale_color_locuszoom(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_locuszoom}} for details.
+See \code{\link[=pal_locuszoom]{pal_locuszoom()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_locuszoom()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_material.Rd b/man/scale_material.Rd
index 20b94e6..daf1755 100644
--- a/man/scale_material.Rd
+++ b/man/scale_material.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_material}
 \alias{scale_colour_material}
 \alias{scale_fill_material}
-\title{Material Design Color Palettes}
+\title{Material Design color palettes}
 \usage{
 scale_color_material(
   palette = c("red", "pink", "purple", "deep-purple", "indigo", "blue", "light-blue",
@@ -34,8 +34,7 @@ scale_fill_material(
 )
 }
 \arguments{
-\item{palette}{Palette type.
-There are 19 available options:
+\item{palette}{Palette type. There are 19 available options:
 \itemize{
 \item \code{"red"}
 \item \code{"pink"}
@@ -55,19 +54,20 @@ There are 19 available options:
 \item \code{"deep-orange"}
 \item \code{"brown"}
 \item \code{"grey"}
-\item \code{"blue-grey"}}
-See \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}
-for details.}
+\item \code{"blue-grey"}
+}
+
+For details, see \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}.}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_material}} for details.
+See \code{\link[=pal_material]{pal_material()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -86,6 +86,5 @@ ggplot(
   scale_fill_material("blue-grey")
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_nejm.Rd b/man/scale_nejm.Rd
index b2b08cb..483a6cd 100644
--- a/man/scale_nejm.Rd
+++ b/man/scale_nejm.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_nejm}
 \alias{scale_colour_nejm}
 \alias{scale_fill_nejm}
-\title{NEJM Color Scales}
+\title{NEJM color scales}
 \usage{
 scale_color_nejm(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (8-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_nejm}} for details.
+See \code{\link[=pal_nejm]{pal_nejm()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_nejm()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_npg.Rd b/man/scale_npg.Rd
index b08d137..1cee97e 100644
--- a/man/scale_npg.Rd
+++ b/man/scale_npg.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_npg}
 \alias{scale_colour_npg}
 \alias{scale_fill_npg}
-\title{NPG Journal Color Scales}
+\title{NPG journal color scales}
 \usage{
 scale_color_npg(palette = c("nrc"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"nrc"}
 (10-color palette inspired by \emph{Nature Reviews Cancer}).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_npg}} for details.
+See \code{\link[=pal_npg]{pal_npg()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_npg()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_rickandmorty.Rd b/man/scale_rickandmorty.Rd
index 2e8eb1d..b144ac1 100644
--- a/man/scale_rickandmorty.Rd
+++ b/man/scale_rickandmorty.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_rickandmorty}
 \alias{scale_colour_rickandmorty}
 \alias{scale_fill_rickandmorty}
-\title{Rick and Morty Color Scales}
+\title{Rick and Morty color scales}
 \usage{
 scale_color_rickandmorty(palette = c("schwifty"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"schwifty"}
 (12-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_rickandmorty}} for details.
+See \code{\link[=pal_rickandmorty]{pal_rickandmorty()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_rickandmorty()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_simpsons.Rd b/man/scale_simpsons.Rd
index eda73f3..0058bdf 100644
--- a/man/scale_simpsons.Rd
+++ b/man/scale_simpsons.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_simpsons}
 \alias{scale_colour_simpsons}
 \alias{scale_fill_simpsons}
-\title{The Simpsons Color Scales}
+\title{The Simpsons color scales}
 \usage{
 scale_color_simpsons(palette = c("springfield"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"springfield"}
 (16-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_simpsons}} for details.
+See \code{\link[=pal_simpsons]{pal_simpsons()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_simpsons()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_startrek.Rd b/man/scale_startrek.Rd
index 3ca8727..431ecd9 100644
--- a/man/scale_startrek.Rd
+++ b/man/scale_startrek.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_startrek}
 \alias{scale_colour_startrek}
 \alias{scale_fill_startrek}
-\title{Star Trek Color Scales}
+\title{Star Trek color scales}
 \usage{
 scale_color_startrek(palette = c("uniform"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"uniform"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_startrek}} for details.
+See \code{\link[=pal_startrek]{pal_startrek()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_startrek()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_tron.Rd b/man/scale_tron.Rd
index a1ccffb..5b99bc5 100644
--- a/man/scale_tron.Rd
+++ b/man/scale_tron.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_tron}
 \alias{scale_colour_tron}
 \alias{scale_fill_tron}
-\title{Tron Legacy Color Scales}
+\title{Tron Legacy color scales}
 \usage{
 scale_color_tron(palette = c("legacy"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"legacy"}
 (7-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_tron}} for details.
+See \code{\link[=pal_tron]{pal_tron()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -54,6 +54,5 @@ ggplot(
   scale_fill_tron()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_uchicago.Rd b/man/scale_uchicago.Rd
index 38b2ac4..9317cd0 100644
--- a/man/scale_uchicago.Rd
+++ b/man/scale_uchicago.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_uchicago}
 \alias{scale_colour_uchicago}
 \alias{scale_fill_uchicago}
-\title{The University of Chicago Color Scales}
+\title{The University of Chicago color scales}
 \usage{
 scale_color_uchicago(palette = c("default", "light", "dark"), alpha = 1, ...)
 
@@ -14,18 +14,20 @@ scale_fill_uchicago(palette = c("default", "light", "dark"), alpha = 1, ...)
 }
 \arguments{
 \item{palette}{Palette type.
-There are 3 available options:
-\code{"default"} (9-color palette);
-\code{"light"} (9-color light palette);
-\code{"dark"} (9-color dark palette).}
+There are three available options:
+\itemize{
+\item \code{"default"} (9-color palette);
+\item \code{"light"} (9-color light palette);
+\item \code{"dark"} (9-color dark palette).
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_uchicago}} for details.
+See \code{\link[=pal_uchicago]{pal_uchicago()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -59,6 +61,5 @@ p2 + scale_fill_uchicago(palette = "dark")
 \url{https://news.uchicago.edu/sites/default/files/attachments/_uchicago.identity.guidelines.pdf}
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/man/scale_ucscgb.Rd b/man/scale_ucscgb.Rd
index 48967e1..2d83c26 100644
--- a/man/scale_ucscgb.Rd
+++ b/man/scale_ucscgb.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_ucscgb}
 \alias{scale_colour_ucscgb}
 \alias{scale_fill_ucscgb}
-\title{UCSC Genome Browser Color Scales}
+\title{UCSC Genome Browser color scales}
 \usage{
 scale_color_ucscgb(palette = c("default"), alpha = 1, ...)
 
@@ -18,12 +18,12 @@ Currently there is one available option: \code{"default"}
 (26-color palette).}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
-See \code{alpha} in \code{\link[grDevices]{rgb}} for details.}
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 
-\item{...}{additional parameters for \code{\link[ggplot2]{discrete_scale}}}
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
 }
 \description{
-See \code{\link{pal_ucscgb}} for details.
+See \code{\link[=pal_ucscgb]{pal_ucscgb()}} for details.
 }
 \examples{
 library("ggplot2")
@@ -47,6 +47,5 @@ ggplot(
   scale_fill_ucscgb()
 }
 \author{
-Nan Xiao <\email{me@nanx.me}> |
-<\href{https://nanx.me}{https://nanx.me}>
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
 }
diff --git a/vignettes/ggsci.Rmd b/vignettes/ggsci.Rmd
index 602abb0..e3dec61 100644
--- a/vignettes/ggsci.Rmd
+++ b/vignettes/ggsci.Rmd
@@ -489,7 +489,7 @@ grid.arrange(
 ```
 
 From the figure above, we can see that even though an identical matrix
-was visualized by all plots, some palettes are more preferrable
+was visualized by all plots, some palettes are more preferable
 than the others because our eyes are more sensitive to the changes
 of their saturation levels.