Where can I find a comprehensive list of these locks, and what they mean?
Our SecureShare white paper at:
http://www.netapp.com/technology/level3/3024.html
should give you a good overview, although it doesn't include exactly the list you are asking for. The man page for the Win32 Createfile() system call at:
http://msdn.microsoft.com/library/tools/wcesdkr/kf_c_33.htm
should also aid understanding.
Most are self-explanatory; but, for instance, what is "N" stand for?
"None" - Deny None (i.e. Deny niether read nor write), caused by an open with FILE_SHARE_READ | FILE_SHARE_WRITE options.
Keith