improved treatment of Element.Obtains via Expression.prepare_stmt;
discontinued pointless all_types ctxt: prep_var is always sequential;
theory Abs_Int_init
imports "~~/src/HOL/Library/While_Combinator"
"~~/src/HOL/Library/Extended"
Vars Collecting Abs_Int_Tests
begin
hide_const (open) top bot dom --"to avoid qualified names"
end