def key_down_native(self,keycode):
self.do_command("<STR_LIT>", [keycode,])<EOL>
Simulates a user pressing a key (without releasing it yet) by sending a native operating system keystroke.
This function uses the java.awt.Robot class to send a keystroke; this more accurately simulates typing
a key on the keyboard.  It does not honor settings from the shiftKeyDown, controlKeyDown, altKeyDown and
metaKeyDown commands, and does not target any particular HTML element.  To send a keystroke to a particular
element, focus on the element first before running this command.

'keycode' is an integer keycode number corresponding to a java.awt.event.KeyEvent; note that Java keycodes are NOT the same thing as JavaScript keycodes!