;; building the 2D precedence tables and then computing the precedence levels
;; from it) can be found in pages 187-194 of "Parsing techniques" by Dick Grune
;; and Ceriel Jacobs (BookBody.pdf available at
-;; http://www.cs.vu.nl/~dick/PTAPG.html).
+;; http://dickgrune.com/Books/PTAPG_1st_Edition/).
;;
;; OTOH we had to kill many chickens, read many coffee grounds, and practice
;; untold numbers of black magic spells, to come up with the indentation code.