eliminated Plain_HOLCF.thy (see also 8e92772bc0e8): it was modeled after HOL/Plain.thy which was discontinued later;
(* Title: HOL/Library/Simps_Case_Conv.thy
Author: Lars Noschinski
*)
theory Simps_Case_Conv
imports Main
keywords
"simps_of_case" "case_of_simps" :: thy_decl
abbrevs
"simps_of_case" = ""
"case_of_simps" = ""
begin
ML_file "simps_case_conv.ML"
end