gmail url variables

Question

I've set up my mailto links so that they open Gmail.

// you can code a url like this to push things into gmail
https://mail.google.com/mail/?view=cm&fs=1&tf=1&[email protected]

I understand there are several other variables:

&su=   // email subject 
&body=  // body text
&disablechatbrowsercheck=1  // pretty self explanatory

The thing is I can't find a list anywhere with the possible ones.

Has anyone composed such a thing or found such a list.