No comment. Sorry.

	drawing
	drawArrowFrom:to:width:color:on: drawOn:

	events
	handlesMouseDown: mouseMove:

	initialization
	initialize

	accessing	top
	degrees
	degrees:
	extent: Contrain extent to be square.
	magnitude
	magnitude:

	drawing	top
	drawArrowFrom:to:width:color:on:
	drawOn:

	events	top
	handlesMouseDown: Do I want to receive mouseDown events (mouseDown:, mouseMove:, mouseUp:)?
	mouseMove: Handle a mouse move event. The default response is to let my eventHandler, if any, handle it.

	initialization	top
	initialize