LPMOO/DGD mudlib hierarchy:

/doc		documentation
/doc/builtins	descriptions of all proprietary builtins
/doc/dgd	DGD-specific documentation
/doc/dgd-net	network package documentation
/doc/dgd-rgx	regular-expression package documentation
/etc		state dump files; LambdaMOO db files; log files
/include	header files
/include/dgd	DGD-specific header files
/include/moo	MOO-specific header files
/lib		daemon (global) objects
/lpc		pure LPC files
/obj		clonable objects
/std		inheritable objects (support routines)
/std/bfuns	MOO builtin function implementations
/tmp		temporary files
/verb		compiled MOO -> LPC verb code (temporary only)