A great tool and a nice teaching aid

Regular expressions are challenging, but a good one is like magic. A bad one can be bizarre beyond belief.
The examples that come with this application are a great help in getting powerful features embedded in your code, or just in parsing text files.
An incredibly good deal and if you are at all interested in regexes (sp?) you need this application. It is quick, well thought out, has a clean interface and lots of useful options.

pjn. about RegExRX