set date "<dummy date>";
boundingbox 20;
centre 450;
A: arc "A";
B: arc clockwise radius 20 angle 180 "B";
C: arc dashed from start of A to end of B angle 190 "C";
arc clockwise dashed from start of A to end of A radius 75 "D";
arc to start depth 30 "E";
arc clockwise to middle of C via middle of A "F";
