[chuck-users] Identifying special keys (e.g control, alt, arrow keys)

I'm interested in making a ChucK program which responds to key presses to assist users' typing. Using ascii codes from HidMsg.ascii, I can differentiate between many keys, but not some keys like the arrow keys, (on windows) control, alt, shift, tab, home, end and some others. I wasn't able to find documentation for the Hid or HidMsg classes. Is there any way to identify these keys in ChucK?