X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;ds=sidebyside;f=mgraph.c;h=222bd094a92be74d70a52a6b0b05606a2a0b337c;hb=a990bb85e8f41a0a60272546ecf04b45b2a2709c;hp=3233890a5100e87beea2cee3919bdec7ed25c994;hpb=96318dec79e12d23d718139bca74f5d33cd52253;p=moebius2.git

diff --git a/mgraph.c b/mgraph.c
index 3233890..222bd09 100644
--- a/mgraph.c
+++ b/mgraph.c
@@ -1,3 +1,7 @@
+/*
+ * Graph topology
+ */
+
 #include "mgraph.h"
 
 static const unsigned dx[V6]= {   0,  +1,  -1,  +1,  -1,   0  },