Lost Key commands

Hi ,
Back in the days , a looong time ago , Cubase had these really handy key commands when recording midi.

If my memory is not too dim there was
Whilst cycle recording
B : Delete subtrack / basically erase all you had recorded and start from scratch without stopping
E: Erase a single note / hit E then the note you wanted to erase all whilst recording , very useful for programming beats
V: Delete last pass / would delete only the last pass recorded, not the previous passes, so if you messed up the last overdub you could just redo that.

I miss these commands a lot and haven’t found them in cubase 7.5
If anyone has an idea it would be great

Cheers