XSeen rougly follows the definition of X3D as implemented by X3DOM. As this is very early in the implementation only a few nodes are supported. All nodes support the HTML5 attributes id, style, and class. At this time no CSS styles are applied, but class names can be used as selectors.

A-Frame and X3D adopted different ways of creating objects. In X3D the object is specified in the scene graph with potentially separate piecs of geometry and appearance. A-Frame assembled objects as entire units bundling geometry with appearance into a single tag.

As XSeen is being used to evaluate these options, many nodes from both languages are presented here. There are additional XSeen-specific nodes that provide features, functionality, and richer vocabularly than is present in either language.