Sort search results in order of relevance, where relevance =
a) better if 0 premises for intro or 1 premise for elim/dest rules
b) better if substitution size wrt to current goal is smaller
Only applies to intro, dest, elim, and simp
(contributed by Rafal Kolanski, NICTA)
(* ID: $Id$ *)
use_thy "IFOL_examples";
use_thy "FOL_examples";
use_thy "ZF_examples";
use_thy "If";