On Sun, 29 Apr 2007 10:56:01 -0700, Joel
wrote:

I though the ? represent any one character.

That is incorrect. At least with VBScript flavor of Regular Expressions, as
used in my expression, it indicates that the preceding (enclosed in parentheses
(is optional). To be more precise, it matches the preceding character or
subexpression zero or one time, so it is equivalent to {0,1}

It can also indicate a non-greedy quantifier.
--ron