more explicit markup for Token.Literal;
Markup.quasi_keyword for Parse.$$$ -- it is used within Args.syntax as well;
Markup.operator for name of Args.syntax, to override outer keywords like "where";
tuned signature;
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