
** Prolog instructions ****

pl  -> root directory for Prolog stuff
pl/doc -> SETTINGS for LPdoc 1.0, .pl files for LPDoc structure (cover, introduction and Prolog Code)
pl/* -> code for Search predicate. In search.pl there are some usage examples. just load in Ciao the referred file and invoke path/2 with some initial state. Comment one of  the includes for the games so there is no conflict with their predicate names 
pl/adt -> ADTs for queue, stack, etc copied from Jorge
pl/games -> implementation of Cannibals and 8-puzzle games
