# Main Command: Go
# Sine Wave by Guy Walker
# www.logoarts.co.uk

to new
  # set default screen, pen and turtle 
  ResetAll SetScreenSize [400 400] HideTurtle 
  SetSC Black SetPC Green SetPS 1 PenUp 
end

to go
  New
  For [X 180 540 6] [
    SetXY (:X - 360) (150* Sine :X) - 16
    PenDown Forward 32 PenUp]
end