>The MESSAGEBOX() function parses the 2^N factors out of the various numbers passed to it to determine the various options. I need to accomplish this same sort of task. I should know this, but is there a formula or algorithm for parsing these factors out or does an iterative loop have to be used?
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>Thanks,
>Bill

Bill,

To check whether 2ⁿ is in, ie bit n is set

?BitTest(ValueToCheck, n)