reverted '|' features in MaSh -- these sounded like a good idea but never really worked
(* Title: HOL/Library/Simps_Case_Conv.thy
Author: Lars Noschinski
*)
theory Simps_Case_Conv
imports Main
keywords "simps_of_case" :: thy_decl == "" and "case_of_simps" :: thy_decl
begin
ML_file "simps_case_conv.ML"
end