if on.code_change then on.code_change() end

    app.send(table.concat(result, '\n--fw: definition boundary--\n'))

    local delimiter = '\n==fw: definition boundary==\n'
    app.send(table.concat(result, delimiter)..delimiter)  -- send a final delimiter to simplify the driver's task

  if on.keypressed then on.keypressed(key, scancode, isrepeat) end

  if on.key_press then on.key_press(key, scancode, isrepeat) end

  if on.textinput then on.textinput(t) end

  if on.text_input then on.text_input(t) end

  if on.keyreleased then on.keyreleased(key, scancode, isrepeat) end

  if on.key_release then on.key_release(key, scancode, isrepeat) end

  if on.mousepressed then on.mousepressed(x,y, mouse_button) end

  if on.mouse_press then on.mouse_press(x,y, mouse_button) end

  if on.mousereleased then on.mousereleased(x,y, mouse_button) end

  if on.mouse_release then on.mouse_release(x,y, mouse_button) end