consult(F)

Instructs  the interpreter to read-in the program which is in file F.  When
a  directive  is read it is immediately executed.  When a clause is read it
is  put  after  any  clauses  already  read  by  the  interpreter  for that
procedure.   When a file has been consulted, a predicate file(F, Proc_List)
is asserted.  Proc_List is a list of the procedures defined in F.
