1 files changed, 1 insertions, 0 deletions
diff --git a/interface.ccl b/interface.ccl
index f862b9e..935b22f 100644
--- a/interface.ccl
+++ b/interface.ccl
@@ -2,6 +2,7 @@
 # $Header$
 
 implements: wavetoy
+inherits: grid
 
 USES INCLUDE: Symmetry.h