What is the function of these default Key Commands?

I am in the process of reassigning all unused default key commands.
For the time being I am unable to figure out what are the default actions for
“Alt+F” [Edit - Invert]
“W” [Edit - Write]
“Alt+E” [Edit - Expand/Reduce]


No idea, I have to say.

This thread got me to submit a Feature Request to properly document the Key Commands
give it some love