clarified NEWS: document_files are officially required since Isabelle2014, but the absence was tolerated as legacy feature;
(* Title: HOL/NSA/Hyperreal.thy
Author: Jacques Fleuriot, Cambridge University Computer Laboratory
Copyright 1998 University of Cambridge
Construction of the Hyperreals by the Ultrapower Construction
and mechanization of Nonstandard Real Analysis
*)
theory Hyperreal
imports HLog
begin
end