-void
-Rest_collision::set_interface (Grob*me)
-{
- me->set_extent_callback (SCM_EOL, X_AXIS);
- me->set_extent_callback (SCM_EOL, Y_AXIS);
-}
+
+ADD_INTERFACE (Rest_collision,"rest-collision-interface",
+ "Move around ordinary rests (not multi-measure-rests) to avoid
+conflicts.",
+ "maximum-rest-count minimum-distance elements");