--- a/src/Pure/General/markup.scala	Mon Dec 29 15:23:56 2008 +0100
+++ b/src/Pure/General/markup.scala	Mon Dec 29 16:44:49 2008 +0100
@@ -120,6 +120,8 @@
   val PID = "pid"
   val SESSION = "session"
 
+  val MESSAGE = "message"
+
 
   /* content */
changeset 29195	ea51797fa416
parent 29185	26fcfca1db9d
child 29205	7dc7a75033ea