What is it at the end of codechef pages?

I see something like this at the end of every page in codechef.

TRACE: cc-strike start
TRACE: you are logged in
TRACE: cc-strike end
DEBUG divToAdd.length (1)=0
DEBUG divToAdd.length (2)=0
DEBUG: url='http://www.codechef.com/NOV13/problems/MCHAIRS'
DEBUG: ending processProfilePage, url matched

Just wanted to know what these meant? :p Asking just out of curiosity. Sorry if it is not the right place to discuss it.