The macro returns if the specified KeySym is a cursor key.
The macro returns if the KeySym is a function key.
The macro returns if the specified KeySym is a keypad key.
The macro returns if the specified KeySym is a miscellaneous function key.
The macro returns if the specified KeySym is a modifier key.
The macro returns if the specified KeySym is a PF key.
The macro returns if the specified KeySym is a vendor-private keypad key.