ause have justtification "input"?
<A NAME="proof_length"></A><HR><PRE><B>int proof_length(Plist proof);
</B></PRE><A NAME="propositional_just"></A><HR><PRE><B>Just propositional_just(Topform c);
</B></PRE>This routine builds and returns a justification list for propositional.
<A NAME="resolve_just"></A><HR><PRE><B>Just resolve_just(Ilist g, Just_type type);
</B></PRE>This routine builds and returns a justification for resolution rules.
This handles binary, hyper, ur, and maybe others.
<A NAME="sb_append_id"