iterami/Docs.htm/common HTM Repos/core.js/core_handle_keydown(event)

• Updates the state of "core_key_shift".
• Does nothing if the control, alt, or meta keys are down, if the pressed key is already down, or the menu is open and blocking events, except for the "Escape" key.
• Otherwise and if they key exists, calls core_handle_prevent(event), sets the key state to true, and calls the key's "down()" function if it exists.