The last portion of the version number specifies the platform and patch level.
The first character stands for:
U = Unix/Linux 32-bit
F = Unix/Linux 64-bit
H = Hybrid. Unix 64-bit, IDS 32-bit (only HP needs this as far as I know, the other platforms can use the U version)
T = WinNT/2000/XP/2003
Old (obsolete) ones:
W = Win 3.11/95/098/ME
N = Novell
D = Dos
The second character C meams commercial release, A = Aplha, B = Beta. Sometimes when the patch level gets high they just contunue with D1.
The number specifies the patch level. If there is a string aftyer the patch level (9.30.UC2W8 fro example then the W8 means an intermedite patch/bug fix which did not went through the full QA path)
I hope this helps, so no GLS info in here, just version and platform info.