--- a/src/Pure/Tools/proof_general.ML Sat Jul 13 12:39:45 2013 +0200
+++ b/src/Pure/Tools/proof_general.ML Sat Jul 13 13:25:42 2013 +0200
@@ -230,6 +230,7 @@
else if name = Markup.stateN then (special "O" ^ "\n", "\n" ^ special "P")
else if name = Markup.sendbackN then (special "W", special "X")
else if name = Markup.intensifyN then (special "0", special "1")
+ else if name = Markup.informationN then ("\n" ^ special "0", special "1")
else if name = Markup.tfreeN then (special "C", special "A")
else if name = Markup.tvarN then (special "D", special "A")
else if name = Markup.freeN then (special "E", special "A")