1 files changed, 2 insertions, 0 deletions
diff --git a/todo b/todo
index 0c5eccbc..a50c9f20 100644
--- a/todo
+++ b/todo
@@ -111,6 +111,8 @@ B Check matching code carefully, in view of bug reported (now fixed)
   word matching is based on whitespace constituents or non-word
   constituents.  [6 hrs]
 
+C Implement proof-auto-retract idea.  (4hrs)
+
 C Make and test generic versions of <..>-goal-command-p, 
   <...>-count-undos, to simplify prover-specific code.