grid off
grid on
fine grid
nothing
left
middle
right
manual
top
middle
bottom
manual
No canvas.
fx(t) =
fy(t) =
gx(t) =
gy(t) =
px =
py =
wx =
wy =
t1 =
t2 =
a =
d =
n =
help
(
Hilfe
)
ans =