help required..

[Paramvir Singh]

hi!!
it is for the first time i'm working with prolog
and i'm using gprolog..
i wanted to know that how do u see the man pages in this version of
prolog..ie
the help corresponding to different commands eg say "asserta"
i used help(asserta). at the prompt and also h/asserta.
but i'm not exactly finding out how do we use the help features..
regards,
paramvir