
	- document in s9core.txt: mkfix, fixval, fix_p

	- factor out make-help-index

	- list->set: use hash table

	- s9core: int_to_bignum(), bignum_to_int()

	- clean up the library

	- review systest

	- optimizations:
		variadic string-append
		variadic vector-append

	- EDOC: handle white space in block comments properly

	- EDOC: troff mode

