<p>
This is an attribute that is rendered as a rectangle.
</p>
Edward A. Lee
$Id: RectangleAttribute.java 70398 2014-10-22 23:44:32Z cxh $
Ptolemy II 4.0
Yellow (eal)
Red (cxh)
The amount of rounding of the corners.
This is a double that defaults to 0.0, which indicates no rounding.