-;;; !! When a word list word is created, it gets added to the tail end
-;;; of the current word list as way of making all word list words be
-;;; present in all word lists. This is different to all other kinds of
-;;; words, which instead are added to the head end of the current word
-;;; list.
-;;;
-;;; !! A word list word is created, it is initialised to the head end
-;;; of the current word list. It will this be an extension to that
-;;; current word list.
-;;;
-;;; EMPTY-WORDLIST is a word list word for an empty word list. It thus
-;;; only contains word list words.
-;;;
-;;; WORDLIST ( "name" -- ) = start