jointjs/docs/src/joint/api/dia/attributes/refY2.html

JavaScript diagramming library

<p>Same as <code>refY</code>. Useful when one needs to position an element absolutely and relatively at the same time.</p>

<pre><code>{ refY: '50%', refY2: 20 } // moves the element by 50% of the referenced height plus extra 20 pixels.</code></pre>