What do these race restrictions mean?(SNW1)

[doubleback]

I'm not sure what the "S" or "C" stands for in these race conditions. Can anyone enlighten me?

(SNW3L)
(S)
(C)

Thanks!

[Overlay]

Here's an earlier thread on that general subject:

http://www.paceadvantage.com/forum/showthread.php?t=91681

See Striker's post in particular.

[doubleback]

Excellent. Thanks for the link!