content: 
  on run argv
      set mycmd to item 1 of argv
      tell application "Keynote"
          if mycmd = "start_slideshow" then
              start slideshow
          else if mycmd = "stop_slideshow" then
              stop slideshow
          else if mycmd = "show_next" then
              show next
          else if mycmd = "show_previous" then
              show previous
          else
              error "Internal error, no such command: " & mycmd
          end if
      end tell
  end run
  