--- a/dwm.h	Tue Sep 05 08:37:34 2006 +0200
+++ b/dwm.h	Tue Sep 05 09:02:37 2006 +0200
@@ -131,6 +131,7 @@
 extern void dotile(Arg *arg);
 extern void focusnext(Arg *arg);
 extern void focusprev(Arg *arg);
+extern void growcol(Arg *arg);
 extern Bool isvisible(Client *c);
 extern void restack();
 extern void togglemode(Arg *arg);