Appart from the good remark of Nicos, you should use
:- use_package(pillow).
instead of
:- use_module('/usr/local/lib/ciao/ciao-1.4/library/pillow/pillow.pl').
(the README is a bit obsolete for the Ciao version of PiLLoW)
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: : Facultad de Informatica :
: Daniel Cabeza Gras : Universidad Politecnica de Madrid :
: CLIP Group : 28660-Boadilla del Monte, MADRID :
: dcabeza(a)fi.upm.es : SPAIN :
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