diff --git a/src/Tools/jEdit/jedit_main/dockables.scala b/src/Tools/jEdit/jedit_main/dockables.scala
--- a/src/Tools/jEdit/jedit_main/dockables.scala
+++ b/src/Tools/jEdit/jedit_main/dockables.scala
@@ -1,50 +1,59 @@
 /*  Title:      Tools/jEdit/jedit_main/dockables.scala
     Author:     Makarius
 
 Isabelle/jEdit dockables.
 */
 
 package isabelle.jedit_main
 
 
 import org.gjt.sp.jedit.View
 
 
 class Debugger_Dockable(view: View, position: String)
   extends isabelle.jedit.Debugger_Dockable(view, position)
 
 class Documentation_Dockable(view: View, position: String)
   extends isabelle.jedit.Documentation_Dockable(view, position)
 
 class Info_Dockable(view: View, position: String)
   extends isabelle.jedit.Info_Dockable(view, position)
 
 class Graphview_Dockable(view: View, position: String)
   extends isabelle.jedit.Graphview_Dockable(view, position)
 
+class Monitor_Dockable(view: View, position: String)
+  extends isabelle.jedit.Monitor_Dockable(view, position)
+
+class Output_Dockable(view: View, position: String)
+  extends isabelle.jedit.Output_Dockable(view, position)
+
 class Protocol_Dockable(view: View, position: String)
   extends isabelle.jedit.Protocol_Dockable(view, position)
 
 class Query_Dockable(view: View, position: String)
   extends isabelle.jedit.Query_Dockable(view, position)
 
 class Raw_Output_Dockable(view: View, position: String)
   extends isabelle.jedit.Raw_Output_Dockable(view, position)
 
 class Simplifier_Trace_Dockable(view: View, position: String)
   extends isabelle.jedit.Simplifier_Trace_Dockable(view, position)
 
 class Sledgehammer_Dockable(view: View, position: String)
   extends isabelle.jedit.Sledgehammer_Dockable(view, position)
 
 class State_Dockable(view: View, position: String)
   extends isabelle.jedit.State_Dockable(view, position)
 
+class Symbols_Dockable(view: View, position: String)
+  extends isabelle.jedit.Symbols_Dockable(view, position)
+
 class Syslog_Dockable(view: View, position: String)
   extends isabelle.jedit.Syslog_Dockable(view, position)
 
 class Theories_Dockable(view: View, position: String)
   extends isabelle.jedit.Theories_Dockable(view, position)
 
 class Timing_Dockable(view: View, position: String)
   extends isabelle.jedit.Timing_Dockable(view, position)