I was experimenting with creating instruments to use in ChucK. I have created functions which I use with spork~, classes, then discovered Chugens, Chubgraphs and Chugins. At the moment I don't want to go the Chugins root to avoid the need for recompiling. I'd rather focus on Chugens and Chubraphs which appear to be exactly what I need. 

The problem is I struggle to find more documentation than chuck.standford.edu/extend/ and that's not a lot. From the examples I know that in a class extending from Chugen two variables are available: second and samp. Is there a way listing other such internal variables? Are there any more functions one can overwrite other than the tick(float in)? 

Any references or information, or more advanced examples of extending Chubgraphs and Chugens would be very much appreciated. 

Thank you in advance, 

Michal