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-rw-r--r--doc/RefMan-tac.tex5
1 files changed, 4 insertions, 1 deletions
diff --git a/doc/RefMan-tac.tex b/doc/RefMan-tac.tex
index e345d1b09f..6358bc1c8f 100644
--- a/doc/RefMan-tac.tex
+++ b/doc/RefMan-tac.tex
@@ -1198,7 +1198,10 @@ When several hypotheses have the form {\tt \ident=t}, the first one is used.
\begin{Variants}
\item {\tt Subst \ident$_1$ \dots \ident$_n$} \\
- Is equivalent to {\tt Subst \ident$_1$; \dots; Subst \ident$_n$}
+ Is equivalent to {\tt Subst \ident$_1$; \dots; Subst \ident$_n$}.
+ \item {\tt Subst} \\
+ Applies {\tt Subst} repeatedly to all identifiers from the context
+ for which an equality exists.
\end{Variants}