Wow this is awesome! I was looking for a way to strain out certain text from the user media speech recognition feature and founf regex in system expressions. I searched on forum of course and found here where i tested blackhornet's capx with
regexlib.com/CheatSheet.aspx
and got all excited. the cheat sheet helped me put what i wanted in the regex textbox. I was a little confused about flag "g" i see that it might be referring to global, like what is entirely in the input textbox... still not sure tho