update the docs

src/SciMLBase.jl

@@ -642,7 +642,7 @@ abstract type ADOriginator end
 """
 $(TYPEDEF)
 
-Used to specify which elements can be aliased in a solve. 
+Used to specify which variables can be aliased in a solve. 
 Every concrete AbstractAliasSpecifier should have at least the fields `alias_p` and `alias_f`. 
 """
 abstract type AbstractAliasSpecifier end

src/problems/linear_problems.jl

@@ -77,20 +77,23 @@ function LinearProblem(A, b, args...; kwargs...)
     end
 end
 
-@doc doc"""
-
-Holds `alias_A` and `alias_b` which determine whether 
-to alias `A` and `b` when solving a `LinearProblem`. 
-"""
 struct LinearAliasSpecifier <: AbstractAliasSpecifier
     alias_p::Union{Bool,Nothing}
     alias_f::Union{Bool,Nothing}
     alias_A::Union{Bool,Nothing}
     alias_b::Union{Bool,Nothing}
 end
 
-"""
-    LinearAliasSpecifier(;alias_A = nothing, alias_b = nothing)
+@doc doc"""
+    Holds information on what variables to alias when solving a `LinearProblem`
+
+### Keywords
+
+* `alias_p::Bool`
+* `alias_f::Bool`
+* `alias_A::Bool`: alias the `A` array.
+* `alias_b::Bool`: alias the `b` array. 
+* `alias::Bool`: sets all fields of the `LinearAliasSpecifier` to `alias`. 
 
 Creates a `LinearAliasSpecifier` where `alias_A` and `alias_b` default to `nothing`.
 When `alias_A` or `alias_b` is nothing, the default value of the solver is used.

src/problems/nonlinear_problems.jl

@@ -557,6 +557,17 @@ struct NonlinearAliasSpecifier <: AbstractAliasSpecifier
     alias_u0::Union{Bool,Nothing}
 end
 
+@doc doc"""
+    Holds information on what variables to alias when solving a `NonlinearProblem`.
+
+### Keywords
+
+* `alias_p::Bool`
+* `alias_f::Bool`
+* `alias_A::Bool`: alias the `A` array.
+* `alias_b::Bool`: alias the `b` array. 
+* `alias::Bool`: sets all fields of the `LinearAliasSpecifier` to `alias`. 
+"""
 function NonlinearAliasSpecifier(;alias_p = nothing, alias_f = nothing, alias_u0 = nothing, alias = nothing)
     if isnothing(alias)
         NonlinearAliasSpecifier(alias_p, alias_f, alias_u0)

src/problems/ode_problems.jl

@@ -530,13 +530,13 @@ when solving an ODE. Conforms to the AbstractAliasSpecifier interface.
 ### Keywords 
 * `alias_p::Bool`
 * `alias_f::Bool`
-* `alias_u0::Bool = false`: alias the u0 array
-* `alias_du0::Bool = false`: alias the du0 array for DAEs
-* `alias_tstops::Bool = false`: alias the tstops array
-* `alias::Bool`: sets all fields to `alias`
+* `alias_u0::Bool`: alias the u0 array. Defaults to false .
+* `alias_du0::Bool`: alias the du0 array for DAEs. Defaults to false.
+* `alias_tstops::Bool`: alias the tstops array
+* `alias::Bool`: sets all fields of the `ODEAliasSpecifier` to `alias`
 
 """
-function ODEAliasSpecifier(;alias_p = nothing, alias_f = nothing, alias_u0 = false, alias_du0 = false, alias_tstops = false, alias = nothing)
+function ODEAliasSpecifier(;alias_p = nothing, alias_f = nothing, alias_u0 = nothing, alias_du0 = nothing, alias_tstops = nothing, alias = nothing)
     if alias == true
         ODEAliasSpecifier(true,true,true,true,true)
     elseif alias == false