- xcenter = -0.1 staff_space;
-
- set_char_box(0, 0.95 staff_space#,
- -yshift#,
- yshift# + height#);
-
- save ne,nw,se,sw; pair ne,nw,se,sw;
-
- se=dir alpha; nw=dir (alpha+180);
- ne=dir (alpha+90); sw=dir (alpha-90);
- penpos1(rthin,alpha+90);
- penpos2(5/4rthick,alpha);
- penpos4(5/4rthick,alpha);
- penpos5(rthin,alpha+90);
- penpos3(3/4rthick,alpha);
-% penpos6(5/8rthick,alpha);
- penpos6(2/3rthick,alpha);
- penpos7(1/2rthin,alpha+90);
-
- z10=z2l+1/2rthin*sw;
-% z11=z4l+1/2rthin*sw;
- z11=z4l+1/2rthin*sw+1/2rthin*se;
- z12=z4r+1/2rthin*ne;
-% z13=z2r+1/2rthin*ne;
- z13=z2r+1/2rthin*ne+1/2rthin*nw;
+
+ yshift# := -1.25 staff_space#;
+ height# := 2.8125 staff_space#;
+ define_pixels (yshift, height);
+
+ alpha := -50;
+ thick := 1/4 staff_space;
+ rthin := 1.25 linethickness;
+ xcenter := -0.1 staff_space;
+ rthick := 2 thick + rthin;
+
+ set_char_box (0, 0.95 staff_space#, -yshift#, yshift# + height#);
+
+ save ne, nw, se, sw;
+ pair ne, nw, se, sw;
+
+ se = dir alpha;
+ ne = dir (alpha + 90);
+ nw = dir (alpha + 180);
+ sw = dir (alpha + 270);
+
+ penpos1 (rthin, alpha + 90);
+ penpos2 (5/4 rthick, alpha);
+ penpos4 (5/4 rthick, alpha);
+ penpos5 (rthin, alpha + 90);
+ penpos3 (3/4 rthick, alpha);
+% penpos6 (5/8 rthick, alpha);
+ penpos6 (2/3 rthick, alpha);
+ penpos7 (1/2 rthin, alpha + 90);
+
+ z10 = z2l + 1/2 rthin * sw;
+% z11 = z4l + 1/2 rthin * sw;
+ z11 = z4l + 1/2 rthin * sw + 1/2 rthin * se;
+ z12 = z4r + 1/2 rthin * ne;
+% z13 = z2r + 1/2 rthin * ne;
+ z13 = z2r + 1/2 rthin * ne + 1/2 rthin * nw;