1 files changed, 1 insertions, 1 deletions
diff --git a/dat.h b/dat.h
index da2038d..e3145b5 100644
--- a/dat.h
+++ b/dat.h
@@ -1,7 +1,6 @@
 #define Eg	9.81	/* earth's gravity (m·s⁻²) */
 #define Cd	0.45	/* drag coefficient for a sphere */
 #define ρ	1.293	/* air density (kg·m⁻³) */
-#define PIX2M	0.001
 #define M2PIX	(1.0/PIX2M)
 
 enum {
@@ -11,6 +10,7 @@ enum {
 	Sdrag,
 	Sdeltax,
 	Seta,
+	Sscale,
 	SLEN,
 };