diff -r 04412cfe6861 -r 2de17c994071 src/HOLCF/IOA/meta_theory/Asig.thy
--- a/src/HOLCF/IOA/meta_theory/Asig.thy	Mon Jun 09 10:21:38 1997 +0200
+++ b/src/HOLCF/IOA/meta_theory/Asig.thy	Thu Jun 12 16:47:15 1997 +0200
@@ -13,7 +13,7 @@
 'a signature = "('a set * 'a set * 'a set)"
 
 consts
-  actions,inputs,outputs,internals,externals
+  actions,inputs,outputs,internals,externals,locals
                 ::"'action signature => 'action set"
   is_asig       ::"'action signature => bool"
   mk_ext_asig   ::"'action signature => 'action signature"
@@ -31,6 +31,9 @@
 externals_def
    "externals(asig) == (inputs(asig) Un outputs(asig))"
 
+locals_def
+   "locals asig == ((internals asig) Un (outputs asig))"
+
 is_asig_def
   "is_asig(triple) ==            
      ((inputs(triple) Int outputs(triple) = {})    &