+#define EL_DF_SLOPE_START 1249
+#define EL_DF_SLOPE_1 (EL_DF_SLOPE_START + 0)
+#define EL_DF_SLOPE_2 (EL_DF_SLOPE_START + 1)
+#define EL_DF_SLOPE_3 (EL_DF_SLOPE_START + 2)
+#define EL_DF_SLOPE_4 (EL_DF_SLOPE_START + 3)
+#define EL_DF_SLOPE_END EL_DF_SLOPE_4