slowbox.dtx: Actually document `\slowboxend'.

diff --git a/slowbox.dtx b/slowbox.dtx
index d42b792..bf031ba 100644 (file)
--- a/slowbox.dtx
+++ b/slowbox.dtx
@@ -124,7 +124,8 @@
 %     {\slowboxend{...\finishsplunt...}...}
 %\end{verbatim}
 % That is, \syntax{"\\slowboxbegin{"<tag>"}{"<stuff>"}"} starts a slow box,
-% beginning with \<stuff> if we're in \opt{show} mode.
+% beginning with \<stuff> if we're in \opt{show} mode; and
+% \syntax{"\\slowboxend{"<stuff>"}"} finishes it, ending with \<stuff>.
 %
 % The |\slowboxbegin| command has a |*|-variant, which causes the box to be
 % typeset regardless of the current mode setting.