diff -r f704c063e95d -r bd7516709051 src/Pure/PIDE/markup.scala
--- a/src/Pure/PIDE/markup.scala	Thu Jun 08 21:17:13 2017 +0200
+++ b/src/Pure/PIDE/markup.scala	Thu Jun 08 23:04:07 2017 +0200
@@ -325,6 +325,7 @@
   /* outer syntax */
 
   val COMMAND = "command"
+  val KEYWORD = "keyword"
   val KEYWORD1 = "keyword1"
   val KEYWORD2 = "keyword2"
   val KEYWORD3 = "keyword3"