Forgive my ignorance, what is LUD?

所有跟帖： 

• last or latest update, I guess -mricase- ♂ (0 bytes) () 02/28/2008 postreply 13:35:39

• 向左看，pJiang的《移壇常見縮語 》 -usedtobeadoctor- ♀ (110 bytes) () 02/28/2008 postreply 13:46:56

• Thanks -ninjagaiden- ♂ (0 bytes) () 02/28/2008 postreply 14:13:21