proper proof body context for Simplifier plugins (solvers, loopers, ...) -- avoid crash due to Subgoal.FOCUS (before e58bc223f46c);
(*  Title:      HOL/HOLCF/HOLCF.thy
    Author:     Franz Regensburger
    Author:     Brian Huffman
HOLCF -- a semantic extension of HOL by the LCF logic.
*)
theory HOLCF
imports
  Main
  Domain
  Powerdomains
begin
default_sort "domain"
end