SET WINDOW -8,88,-3,3
DEF x(t) = 4*COS(t) + t*1
DEF y(t) = 1*SIN(t)
SET LINE width 2
FOR t=0 TO 2*PI*12 STEP 0.01
   PLOT LINES: x(t),y(t);
NEXT t
PLOT LINES
PLOT LINES: -8,0;4,0
PLOT LINES
PLOT LINES: 79,0;88,0
END