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-rw-r--r--doc/refman/RefMan-tac.tex20
1 files changed, 15 insertions, 5 deletions
diff --git a/doc/refman/RefMan-tac.tex b/doc/refman/RefMan-tac.tex
index 4946be8f22..0c60a4ea73 100644
--- a/doc/refman/RefMan-tac.tex
+++ b/doc/refman/RefMan-tac.tex
@@ -1540,17 +1540,27 @@ symmetric form occurs. It is equivalent to {\tt cut
\term$_2$=\term$_1$; [intro H{\sl n}; rewrite <- H{\sl n}; clear H{\sl
n}| assumption || symmetry; try assumption]}.
+\begin{ErrMsgs}
+\item \errindex{terms do not have convertible types}
+\end{ErrMsgs}
+
\begin{Variants}
\item {\tt replace {\term$_1$} with {\term$_2$} in \ident}\\
This replaces {\term$_1$} with {\term$_2$} in the hypothesis named
{\ident}, and generates the subgoal {\term$_2$}{\tt =}{\term$_1$}.
- \begin{ErrMsgs}
- \item \errindex{No such hypothesis} : {\ident}
- \item \errindex{Nothing to rewrite in {\ident}}
- \end{ErrMsgs}
-
+% \begin{ErrMsgs}
+% \item \errindex{No such hypothesis} : {\ident}
+% \item \errindex{Nothing to rewrite in {\ident}}
+% \end{ErrMsgs}
+
+\item {\tt replace {\term$_1$} with {\term$_2$} by \tac} This acts as
+ {\tt replace {\term$_1$} with {\term$_2$}} but try to solve the
+ generated subgoal {\tt \term$_2$=\term$_1$} using {\tt \tac}.
+\item {\tt replace {\term$_1$} with {\term$_2$} in \ident by \tac} This acts as
+ {\tt replace {\term$_1$} with {\term$_2$} in \ident} but try to solve the
+ generated subgoal {\tt \term$_2$=\term$_1$} using {\tt \tac}.
\end{Variants}
\subsection{\tt reflexivity