term.clear()
term.setCursorPos(1,1)
print("+-------------------------------------+")
print("|  Please place fuel in the lower-    |")
print("|  right slot.                        |")
print("+-------------------------------------+")
sleep(0.5)
print("How big of a square do you want? ")

sqrSize = read()

function plcColumn()
  for i = 1, sqrSize do
    turtle.forward()
    turtle.placeDown()
  end
end

--Even Column Placement

function aa()
    turtle.placeDown()
    plcColumn()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnLeft()
end

--Odd Column Placement

function ab()
    turtle.placeDown()
    plcColumn()
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
end

if sqrSize / 2 == true
  isOdd = false
else
  isOdd = true
end

print(isOdd)