There's lots more! Including:
Tools for assigning exercises and setting due dates
Rosters that track all student work automatically
An exercise editor for adding your own exercises
the full CodeLab.
"Code Lab has indeed proven to be invaluable in giving students additional hands-on experience and hence a better understanding of programming. The students have also given it favorable reviews. I will certainly be recommending it for next semester's introductory programming class." Glenn Jones, Professor, Medgar Evers College
"I liked how the user received instant responses to check your mistakes as you progressed." Jon L, University of Maryland.
"I really liked how there was immediate feedback. This allowed me to go through my notes and see what exactly I was doing wrong." Student, University of Maryland.