clarified NEWS: document_files are officially required since Isabelle2014, but the absence was tolerated as legacy feature;
(* Title: HOL/ZF/MainZF.thy
Author: Steven Obua
Starting point for using HOLZF.
See "Partizan Games in Isabelle/HOLZF", available from http://www4.in.tum.de/~obua/partizan
*)
theory MainZF
imports Zet LProd
begin
end