i beg some document about the gc principle and implemention of Lua

["冶晶邓" <fatfatson@...>]

hi,dear all:

    nowadays i'm studying lua and reading its source code, but when i enter the gc field(lgc.c), i found there's almost nothing i understood, so i want some document about the gc,especially Lua's implemention of gc, for my  pre-study.. thanks very very much!!