The reference pages for the Quintus supplied command line utilities follow, in alphabetical order.
prolog(1)
qcon(1)
qgetpath(1)
qld(1)
qnm(1)
qpc(1)
qplm(1)
qsetpath(1)
qui(1)
Once these files are installed in library('q3.5'), you can access them
on-line by typing, for example,
% man qpc
Refer to int-dir for the location of these reference pages in the Quintus directory hierarchy.