diff --git a/man/carcassubmission.Rd b/man/carcassubmission.Rd
index 95c9a0c..52ee676 100644
--- a/man/carcassubmission.Rd
+++ b/man/carcassubmission.Rd
@@ -3,7 +3,7 @@
 \docType{data}
 \name{carcassubmission}
 \alias{carcassubmission}
-\title{British farm carcass submissions data}
+\title{The British farm carcass submissions data}
 \format{
 Data frame with 1,858 rows and 4 columns.
 \describe{
diff --git a/man/farmsubmission.Rd b/man/farmsubmission.Rd
index 19379af..8952abb 100644
--- a/man/farmsubmission.Rd
+++ b/man/farmsubmission.Rd
@@ -3,7 +3,7 @@
 \docType{data}
 \name{farmsubmission}
 \alias{farmsubmission}
-\title{British farm submissions data}
+\title{The British farm submissions data}
 \format{
 Data frame with 12,036 rows and 4 columns.
 \describe{
diff --git a/man/netherlandsimmigrant.Rd b/man/netherlandsimmigrant.Rd
index dd54620..15d2654 100644
--- a/man/netherlandsimmigrant.Rd
+++ b/man/netherlandsimmigrant.Rd
@@ -3,7 +3,7 @@
 \docType{data}
 \name{netherlandsimmigrant}
 \alias{netherlandsimmigrant}
-\title{Data on immigration in the Netherlands}
+\title{Immigration data in the Netherlands}
 \format{
 Data frame with 1,880 rows and 5 columns.
 \describe{
diff --git a/man/stratifyPopsize.Rd b/man/stratifyPopsize.Rd
index 5449add..255dafd 100644
--- a/man/stratifyPopsize.Rd
+++ b/man/stratifyPopsize.Rd
@@ -3,7 +3,7 @@
 \name{stratifyPopsize}
 \alias{stratifyPopsize}
 \alias{stratifyPopsize.singleRStaticCountData}
-\title{Estimate size of sub populations.}
+\title{Estimate size of sub-populations}
 \usage{
 stratifyPopsize(object, strata, alpha, ...)