make sure short theorem names are preferred to composite ones in Sledgehammer;
this code used to work at some point
(* Title: HOL/Import/HOL4Syntax.thy
ID: $Id$
Author: Sebastian Skalberg (TU Muenchen)
*)
theory HOL4Syntax imports HOL4Setup
uses "import_syntax.ML" begin
ML {* HOL4ImportSyntax.setup() *}
end