-double mfact = 0.55;
-DEFGEOM(single, 0, 0, sw, 0, bh, sw, sh-bh, wx, wy, mfact*sw, wh, mx+mw, wy, ww-mw, wh, wx, wy, ww, wh)
+#define MFACT 0.55 /* master width factor [0.1 .. 0.9] */
+DEFGEOM(single, 0, 0, sw, 0, bh, sw, sh-bh, wx, wy, mfact*ww, wh, mx+mw, wy, ww-mw, wh, wx, wy, ww, wh)