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-rw-r--r--doc/refman/RefMan-pro.tex13
1 files changed, 0 insertions, 13 deletions
diff --git a/doc/refman/RefMan-pro.tex b/doc/refman/RefMan-pro.tex
index d73ab5d2c..c781c8274 100644
--- a/doc/refman/RefMan-pro.tex
+++ b/doc/refman/RefMan-pro.tex
@@ -211,7 +211,6 @@ backtracks one step.
\begin{ErrMsgs}
\item \errindex{No focused proof (No proof-editing in progress)}
-\item \errindex{Undo stack would be exhausted}
\end{ErrMsgs}
\begin{Variants}
@@ -222,18 +221,6 @@ backtracks one step.
\end{Variants}
-\subsection[\tt Set Undo {\num}.]{\tt Set Undo {\num}.\comindex{Set Undo}}
-
-This command changes the maximum number of {\tt Undo}'s that will be
-possible when doing a proof. It only affects proofs started after
-this command, such that if you want to change the current undo limit
-inside a proof, you should first restart this proof.
-
-\subsection[\tt Unset Undo.]{\tt Unset Undo.\comindex{Unset Undo}}
-
-This command resets the default number of possible {\tt Undo} commands
-(which is currently 12).
-
\subsection[\tt Restart.]{\tt Restart.\comindex{Restart}}
This command restores the proof editing process to the original goal.