Miscellany

I want to match this:Line number On/Off | Expand/Contract <!-- THE BEGINNING --><div class="whatever"><p>Some <u>Random</u> HTML in here</p></div><!-- THE END --> This is the regex i thought of but it doesn't match anything... why?Line number On/Off | Expand/Contract|<!--\sTHE\sBEGINNING\s-->.*?<!--\sTHE\sEND\s-->|m