I almost certainly spent longer looking for this today than it would have taken to re-do it. My most used powershell debugger commands. I will redo it at some stage and add in:

get-psbreakpoint | disable-psbreakpoint

…and this cmdlet what I wrote: Get-MuNonStandardVariables.ps1

A hand-drawn cheat sheet for PowerShell debugging includes commands like step into, step over, step out, quit, call stack, list, repeat last, and help, with decorative sketches and colors.