>> I won't even start to note that Heisenberg indicates that no value of >> zero is valid for very long at all, no matter how radical. > We're using engineering 0, which is 0 +-5% unless otherwise specified ;-) Ok, adjusting by 5% each way, that's the range 0 <= X <= 0 :-) Heisenberg is still knocking. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist