when I used the web-mail system to submit my program, the
mail-system always add some rubbish ad at the end of my
mail, this leads directly to compilation error message, how
do I avoid this? Is there anything like @begin_of_source
and @end_of_source, as they do in the acm.uva.es site?
I remember that thing exists, but I've checked the faq, and
find nothing, :-(