clarified axiom_table: uniform space (e.g. like consts), e.g. relevant for export of HOL-ex.Join_Theory;
(* Title: Pure/Sessions.thy
Author: Makarius
PIDE markup for session ROOT.
*)
theory Sessions
imports Pure
keywords "session" :: thy_decl
and "description" "directories" "options" "sessions" "theories"
"document_files" "export_files" :: quasi_command
and "global"
begin
ML \<open>
Outer_Syntax.command \<^command_keyword>\<open>session\<close> "PIDE markup for session ROOT"
Sessions.command_parser;
\<close>
end