added emulations for simple_read_term/read_term/read_prop (formerly in sign.ML);
(* Title: Pure/Tools/ROOT.ML ID: $Id$Miscellaneous tools and packages for Pure Isabelle.*)use "named_thms.ML";use "isabelle_process.ML";(*basic XML support*)use "xml_syntax.ML";(*derived theory and proof elements*)use "invoke.ML";