[DBG]evaluate rescured version
[DBG] debugging..
[DBG]...
[DBG] aaa
[DBG] first debugging version
[BRK]bugfix
[DBG]debugging version
[DBG]ing -> make test to method_add
[DBG]stage commit. debugging unknown error
[DBG]can gao, gaoing
[DBG] debugging errors
[DEV] with debuggin informationed added to SchemeBuffer
[DEV] error fix
[DEV] add some mesg print out for Buffer & indicator
[DEV] just for convenient