>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,

The underlying code is undoubtedly using bit-wise functions to determine the icon, button style, etc. If you know the incoming values, you simply need to use BITAND() to determine what's been specified. If a given flag returns zero or the same value that it's set at, you know that it wasn't or was specified, in that order.