-#define MLP_BB 0x01 // flexa with left downward cauda (for Brevis-Brevis)
-#define MLP_sc 0x02 // last head of asc. sine proprietate cum perfectione
- // (i.e. brevis head with downward right cauda)
-#define MLP_ss 0x04 // last head of asc. sine proprietate sine perfectione
- // (i.e. pure brevis head)
-#define MLP_cs 0x08 // last head of asc. cum proprietate sine perfectione
- // (i.e. brevis head with downward left cauda)
-#define MLP_SS 0x10 // flexa with left upward cauda (for Semibr.-Semibr.)
-#define MLP_LB 0x20 // core flexa (for Longa-Brevis)
-
-#define MLP_NONE 0x00 // no output
-#define MLP_SINGLE_HEAD (MLP_sc | MLP_ss | MLP_cs)
-#define MLP_FLEXA (MLP_BB | MLP_SS | MLP_LB)
-#define MLP_ANY (MLP_FLEXA | MLP_SINGLE_HEAD)
+#define MLP_NONE 0x00 // no output
+#define MLP_UP 0x01 // upward left stem
+#define MLP_DOWN 0x02 // downward left stem
+#define MLP_BREVIS 0x04 // mensural brevis head
+#define MLP_LONGA 0x08 // mensural brevis head with right cauda
+#define MLP_MAXIMA 0x10 // mensural maxima head without stem
+#define MLP_FLEXA 0x20 // mensural flexa-like shape
+
+#define MLP_STEM (MLP_UP | MLP_DOWN)
+#define MLP_SINGLE_HEAD (MLP_BREVIS | MLP_LONGA | MLP_MAXIMA)
+#define MLP_ANY (MLP_FLEXA | MLP_SINGLE_HEAD)