- is it possible, using the standard gradebook, to add a 'hand in rate' column? Currently this is quite a simple formula (round(step(all)*100/N)), but I can't see how to do this with the new gradebook.
- if it isn't, I want to start updating Calculated Columns to work with the new gradebook -- but where do I start? I'm no stranger to hacking Moodle, but this 'tree' of 'grade_objects' has got me flumoxed. Is there a guide to the internal structure of this aspect of Moodle somewhere?