Reading the definition of a chin up would be extremely confusing to a newbie. It defines a pull-up and then says "dont confuse a chinup for a pull-up which is what we just defined as a chinup". Also, the poor drawing makes it more confusing. I like the example for the 100pushups, cant you make it like that? The program needs to be more challenging - no matter what your max is, you always start doing 2,2,1,1,1. Lame.
Dudegotnomoney about Twenty Chinups