About option -d <level>

["Anderson Donda" <andersondonda@xxxxxxxxx>]

Hi list,

This is my first message here and i have a sample question..

Anybody knows how the option "-d <level> " of squid work?.

For example: I use squid -d 10, and this show me everything the squid 
executing, but if I execute squid -d 1, this show me same thing.

So, How squid work with each level?

Thanks for all..