Update the manuals in Docs/

Docs/list-environment-variables.md

@@ -1,4 +1,4 @@
-## list-environment-variables.ps1 - Lists all environment variables
+## The list-environment-variables.ps1 PowerShell Script
 
 This PowerShell script lists all environment variables.
 
@@ -31,4 +31,32 @@ Author: Markus Fleschutz | License: CC0
 ## Related Links
 https://github.com/fleschutz/PowerShell
 
+## Source Code
+<#
+.SYNOPSIS
+	Lists all environment variables
+.DESCRIPTION
+	This PowerShell script lists all environment variables.
+.EXAMPLE
+	PS> ./list-environment-variables
+
+	Name                           Value
+	----                           -----
+	ALLUSERSPROFILE                C:\ProgramData
+	APPDATA                        C:\Users\Joe\AppData\Roaming
+	...
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+try {
+	Get-ChildItem env:
+	exit 0 # success
+} catch {
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}
+
 *Generated by convert-ps2md.ps1 using the comment-based help of list-environment-variables.ps1*