Jens, just for my own learning... you described them as bits...is this correct?

&1 = bit 1
&2 = bit 2
&4 = bit 3
&8 = bit 4
...

The main reason I set it in the order I did, was so that anyone who happened to use an older version of the UDF would not have to change anything in their script if they chose to use the newer version.
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(... better days ahead)