This is a template that I use when I create a PowerShell script. It includes code for linking external libraries, displaying the application name/version and copyright/license, help screens, and command line parameter handling.
PowerShell 5.x or higher. The template use a class and only PowerShell from this version onwards support this functionality.
The Main section (i.e. #=== Main === is where you add the main body of your code. The code begins by instantiating AppInfo with $app. This displays the program info (name, version, license) and help screen if its requested. The main body ends with $app.QuitProgram($true, $true) which displays the script execution time and Done message (both are optional). Don't modify the AppInfo class because this displays the program info and start/end time of the script.
You need to define the contents of the help screen in the "#=== Help Screen ===" area. This is called by DisplayHelp in the AppInfo class. The command line parameters to call help is ? or help.
Add your custom functions in the "#=== Functions ===" area.