diff --git a/website/docs/architecture.md b/website/docs/architecture.md
index 927deb65..f9954b35 100644
--- a/website/docs/architecture.md
+++ b/website/docs/architecture.md
@@ -8,9 +8,18 @@ architecture ("value")
 
 `value` is one of:
 
+* `universal`: The universal binaries supported by iOS and macOS
 * `x86`
 * `x86_64`
 * `ARM`
+* `ARM64`
+
+Additional values that are aliases for the above:
+
+* `i386`: Alias for `x86`
+* `amd64`: Alias for `x86_64`
+* `x32`: Alias for `x86`; There is intent to deprecate this
+* `x64`: Alias for `x86_64`; There is intent to deprecate this
 
 ### Applies To ###
 
diff --git a/website/docs/cdialect.md b/website/docs/cdialect.md
index dc4ad0f1..ae79a3cd 100644
--- a/website/docs/cdialect.md
+++ b/website/docs/cdialect.md
@@ -7,15 +7,16 @@ cdialect "value"
 ### Parameters ###
 
 `value` one of:
-* `Default` - needs documentation.
-* `C89` - needs documentation.
-* `C90` - needs documentation.
-* `C99` - needs documentation.
-* `C11` - needs documentation.
-* `gnu89` - needs documentation.
-* `gnu90` - needs documentation.
-* `gnu99` - needs documentation.
-* `gnu11` - needs documentation.
+
+* `Default`: the default C dialect for the toolset
+* `C89`: ISO C89
+* `C90`: ISO C90
+* `C99`: ISO C99
+* `C11`: ISO C11
+* `gnu89`: GNU dialect of ISO C89
+* `gnu90`: GNU dialect of ISO C90
+* `gnu99`: GNU dialect of ISO C99
+* `gnu11`: GNU dialect of ISO C11
 
 ### Applies To ###
 
diff --git a/website/docs/cppdialect.md b/website/docs/cppdialect.md
index 86bcac7e..89ac962f 100644
--- a/website/docs/cppdialect.md
+++ b/website/docs/cppdialect.md
@@ -7,15 +7,27 @@ cppdialect "value"
 ### Parameters ###
 
 `value` one of:
-* `Default` - needs documentation.
-* `C++98` - needs documentation.
-* `C++11` - needs documentation.
-* `C++14` - needs documentation.
-* `C++17` - needs documentation.
-* `gnu++98` - needs documentation.
-* `gnu++11` - needs documentation.
-* `gnu++14` - needs documentation.
-* `gnu++17` - needs documentation.
+
+* `Default`: the default C++ dialect for the toolset
+* `C++latest`: the latest C++ dialect for the toolset or action where available, otherwise the latest C++ dialect supported by Premake
+* `C++98`: ISO C++98
+* `C++0x`: ISO C++11 Draft
+* `C++11`: ISO C++11
+* `C++1y`: ISO C++14 Draft
+* `C++14`: ISO C++14
+* `C++1z`: ISO C++17 Draft
+* `C++17`: ISO C++17
+* `C++2a`: ISO C++20 Draft
+* `C++20`: ISO C++20
+* `gnu++98`: GNU dialect of ISO C++98
+* `gnu++0x`: GNU dialect of ISO C++11 Draft
+* `gnu++11`: GNU dialect of ISO C++11
+* `gnu++1y`: GNU dialect of ISO C++14 Draft
+* `gnu++14`: GNU dialect of ISO C++14
+* `gnu++1z`: GNU dialect of ISO C++17 Draft
+* `gnu++17`: GNU dialect of ISO C++17
+* `gnu++2a`: GNU dialect of ISO C++20 Draft
+* `gnu++20`: GNU dialect of ISO C++20
 
 ### Applies To ###