f1  twice for HELP | f2  list on/off    |  F1  set mark    | F2  kill region
 f3  search forward | f4  search reverse |  F3  yank        | F4  copy region
 f5  insert/over    | f6  exec kbd macro |  F5  quote char  | F6  replace
 f7  delete prev wd | f8  delete next wd |  F7  delete line | F8  goto line
 f9  save file      | f10 exit emacs     |  F9  write file  | F10 find file