I'm amazed they've all got prerequisites like that. At least half of the courses in the Stanford math department are the kind I describe as having a "suspicious lack of prerequisites". I suppose if you understand half the words in the course description, then you know whether or not you can take the class.
A lot of the higher-numbered graduate courses listed only "graduate standing and consent of the instructor" or somesuch vagueness. Also, there is some ambiguity because some courses require X AND Y as prerequisites and others require X OR Y. Moreoever, there are anti-requisites (courses that disqualify you from another course), co-requisites, and recommended pre-requisites. Recommended prerequisites I put in sometimes with a dashed edge. The others I might put in sometime. I want to color it by courses I've taken, courses I'm eligible for, and courses offered in a given semester. Automatically, of course.. I'm too lazy to do that by hand, I think. (-:
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