Directory Structure
The directory structure of GB is:
SOURCE
TEMP -- store tempory files
DOC -- store documents of GB
SYS -- store profiles of GB ( currentlt is HTML)
BOOK -- store local cache of GB
An example
BOOK--CIS310--Version_Set1--ch3100
BOOK--CIS310--Version_Set1--ch3101
BOOK--CIS310--Version_Set1--ch3102
BOOK--CIS310--Version_Set2--ch3100
...
TAOML -- store tao files
LOG -- Log files are put here
