Thanks for pointing out that these manual entries have not made their
way into the canonical manual yet! It’s a little strange that they’ve
been overlooked for two releases…

I have put the necessary manual entries for Csound’s specific
implementation here:

http://www.csounds.com/akbari/atsman/atsinfo.html
http://www.csounds.com/akbari/atsman/atsread.html
http://www.csounds.com/akbari/atsman/atsbuffuncs.html
http://www.csounds.com/akbari/atsman/atssynth.html

also, you may be interested in this theoretical overview of the ATS
implementation

http://www-ccrma.stanford.edu/~juan/ATS_manual.html

Happy synthesis!

-David