title: Drawing a rectangle in AS3, the border is partially off-screen
body: <p>I am drawing a rectangle at 0,0 with a line-style-thickness of 4px. It has height 100% and width 50%. The right-hand edge has a border 4px wide, but all 3 other sides are only 2px, suggesting the mid-point of the edge is classed as the border. Why isn't the edge drawn 'inside' the rectangle?</p>