Phlip wrote:

> line = TckLine.new(canvas, x0, y0, x1, y1).
>         fill(color).
>         width(3)

You can already do:

line = TckLine.new(canvas, x0, y0, x1, y1)
         line.fill(color)
         line.width(3)

I prefer this because if you delete the last line, you don't cause a 
syntax error (or worse).