i can't get this to work:
I have a book in epub with lots of instances of Generated by ABC Amber LIT Converter, http://www.processtext.com/abclit.html
so I change header detection to file:///.+(\d|(txt|html|htm)) & tick boxes as per above instructions, then force a conversion from epub to epub - the offending spam is still there ???
also, I've screwed up - I copied the default regex to note pad, so that I could put it back again, but I did not grab the entire line, how do I restore the default expression please. is it the same as the footer expression default ?