d if there is none.)
The substitution for variables of ft is placed into <A HREF="unify.html">Context</A> subst.
<P>
If an object is returned, <A HREF="discrim.html">Discrim_pos</A> *ppos is set to the retrieval
state and is used for subsequent discrim_tame_retrieve_next() calls.
<P>
If you to get some, but not all answers, you must call
discrim_tame_cancel() to clear the substitution and free memory
associated with the <A HREF="discrim.html">Discrim_pos</A>.
<A NAME="discrim_bind_retrieve_next"></A><HR><PR