Thank You!
For the record, I implied that the HELP documentation didn't explain enough,
and then I stumbled into the "Regular Expression Syntax" area (missed it the first time)
If I understand correctly,
the "?" in the first string is just there to allow the "~" negate character at the beginning of the string?
also, just for my own curiosity,
How does it know that the last "-" in the list of legal characters is not a "range" symbol? (like the other two "-")
(I'm new to regular expressions)
and finally (sorry to be a burden)
Why would the DEFAULT string NOT put the "~" in the list of legal characters?
(If I click the "Defaults" button in Rules,it changes it back to a less useful rule?)
thanks again for taking the time to respond,
Jack