 		aTo = aFrom + Bu.rand Math.PI / 2, Math.PI * 2
 
 		fan = new Bu.Fan @randomX(), @randomY(), @randomRadius(), aFrom, aTo
-		fan.string.points[0].label = "A"
-		fan.string.points[1].label = "B"
+		fan.string.points[0].label = 'A'
+		fan.string.points[1].label = 'B'
 		return fan
 
 	generatePolygon: ->


	generateCircle: ->
		circle = new Bu.Circle @randomX(), @randomY(), @randomRadius()
		circle.center.label = "O"
		return circle

	generateBow: ->

		aTo = aFrom + Bu.rand Math.PI / 2, Math.PI * 2

		bow = new Bu.Bow @randomX(), @randomY(), @randomRadius(), aFrom, aTo
		bow.string.points[0].label = 'A'
		bow.string.points[1].label = 'B'
		return bow

	generateTriangle: ->
