on logical and

[utzoo!decvax!harpo!npoiv!pyuxbb!mkg]

When writing not so obvious (to others or yourself for that matter)
expressions like "if (x & a == b)", one should ALWAYS use parenthesis
to emphasize the "true" meaning of the expression.  Then it is
clear to all that what the author said is what the author REALLY meant. 
   Marsh Gosnell  BTL Piscataway  (201) 981-2758  harpo!whuxlb!mkg