Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
If you really have no idea what it is, Google is, as usual, the place to go. It is apparently the name and course number of a New York University School of Continuing and Professional Studies class:

http://www.scps.nyu.edu/departments/course.jsp;jsessionid=D0D22WXFCPO1TAD0SM5SFEQ?courseId=68690

"Mac OS and Color Systems"
X36.9223

The course description on the site makes it sound like a very rudamentary introduction to the MacOS and the basics of computer color--CMYK vs RGB, that sort of thing.
 
I actually did google it and got the same thing. I didn't realize that it was the course #. I thought it was a specific color system that i wasn't aware of.

~e
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.