That's the beauty of it; The "System Variables" are just variables for the prompt itself; the path searching&aliasses, the screen mode and clearing, the font and color of text, and the prompt itself. System Date and Time can be changed though. ;D

And whatever other systemwide interrupts I can hack up.
Hey, we CAN hack interrupts besides INT40, right? I mean, Intel Specifications aren't necessarily BLOCKED to us, are they?