// Add letters to the text.
// This should be run in the <Step> event.
if (focus)
{
	myText = keyboard_string;
	// Check for the TAB key, since this does not work correctly with events.
	if (keyboard_check_direct(vk_tab))
	{
		textboxTab();
	}
	else
	{
		tabbed = false;
	}
}