
        Note: the rounded corners effect uses true alpha transparency masking.
        This means that this effect <b>will fail to be saved</b> on jpegs
        <em>unless</em> you either <ul>
        <li>convert the image to PNG (using the coloractions filter for that),</li>
        <li>define a canvas underneath it (using canvasactions-define-canvas) or</li>
        <li>underlay a solid color (using coloractions-alpha-flatten) or</li>
        <li>underlay a background image (canvasactions-underlay)</li>
        </ul>
        as a later part of this imagecache pipeline.
        <br/>
      