RegEx parentheses

I can’t see how to get parentheses to appear in the RegEx…

Or is there a generic way to insert an arbitrary ANSI character code (e.g. \41)?

I don’t think there is a way. I can add something like [:oparen:] and [:cparen:] later this week. In the meantime can you add them with an inline formula (the f(x) button)?

Yes that works, thanks.