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ProgTutorial/Tactical.thy
changeset 288 d6e9fb662d68
parent 256 1fb8d62c88a0
child 289 08ffafe2585d 
--- a/ProgTutorial/Tactical.thy	Wed Jul 22 15:15:22 2009 +0200
+++ b/ProgTutorial/Tactical.thy	Wed Jul 22 15:31:22 2009 +0200
@@ -146,7 +146,7 @@
   \end{isabelle}
 
   This means they failed.\footnote{To be precise tactics do not produce this error
-  message, the it originates from the \isacommand{apply} wrapper.} The reason for this 
+  message, it originates from the \isacommand{apply} wrapper.} The reason for this 
   error message is that tactics 
   are functions mapping a goal state to a (lazy) sequence of successor states. 
   Hence the type of a tactic is:
isabelle-cookbook