fix minor dotguide.pdf mistake

diff --git a/doc/dotguide/dotguide.tex b/doc/dotguide/dotguide.tex
index 67244ee4db3b752e0c779d8c15fdf152250d0270..d5e99810a350d2e88f4d5ffbb86b8ab240cff8f4 100644 (file)
--- a/doc/dotguide/dotguide.tex
+++ b/doc/dotguide/dotguide.tex
@@ -880,7 +880,7 @@ the center of the box.
 There are also two ways to specify ports. One way is to use 
 an edge's {\tt headport} and {\tt tailport} attributes, e.g.
 \begin{verbatim}
-  a -> b [tailport=se]
+  a -> b [headport=se]
 \end{verbatim}
 Alternatively, the portname can be used to modify the node name as part of the
 edge declaration using the syntax {\tt {\it node\_name}:{\it port\_name}}.