1 files changed, 2 insertions, 0 deletions

diff --git a/include/grail-types.h b/include/grail-types.h
index 374f30a..66afd3f 100644
--- a/include/grail-types.h
+++ b/include/grail-types.h
@@ -65,5 +65,7 @@
 #define GRAIL_PROP_ROTATE_A     2       /* arc */
 
 #define GRAIL_PROP_TAP_DT       0       /* tap time (ms) */
+#define GRAIL_PROP_TAP_X        1       /* horizontal position */
+#define GRAIL_PROP_TAP_Y        2       /* vertical position */
 
 #endif