As far as I can tell, the list of pdb commands is:
  - commands
  - break
  - tbreak
  - enable
  - disable
  - condition
  - ignore
  - clear
  - where
  - up
  - down
  - until
  - step
  - next
  - run
  - return
  - continue
  - jump
  - debug
  - quit
  - args
  - retval
  - p
  - pp
  - list
  - longlist
  - source
  - whatis
  - display
  - undisplay
  - interact
  - alias
  - unalias
  - help

Those not in the documentation are debug and retval.

Can you open a new pull request to document them?