cd ~/pst.w.2/
lpr ht.s7
lpr ht2.s7
cat  pst.html hungry-thirsty/ht-tutorial.html \
     hungry-thirsty/full.html hungry-thirsty/exercises/*.html \
     analogy/analogy.html analogy/full.html \
 > pst-all.html 

;; then replace in the buffer
(replace-string "../diagrams" "diagrams")