tuned signature (again, amending f32ac01aef5e), e.g. relevant for Isabelle/DOF;
(* Title: HOL/MicroJava/DFA/Semilattices.thy
Author: Gerwin Klein
Copyright 2003 TUM
*)
section \<open>Semilattices\<close>
(*<*)
theory Semilattices
imports Err Opt Product Listn
begin
end
(*>*)