You can
Get-Help Update-ItemProperty -Example
to get some samples.It is introspectable, so command line completion of argument parameters just work.
I even saw web based and windows based gui that can probe any powershell command and provide a rudimentary UI with field level help.
You can even find the relevant commands e.g.
Get-Command -Noun PSDrive
gets you all the commands that can act on a PSDrive object.