VRML97 External Authoring Interface (EAI) was used to pass events from HTML scripts into VRML97 scene scripts.

These scripting examples illustrate how to use the original External Authoring Interface (EAI) in the VRML97 specification. It allows scripts placed in an external HTML page to communicate with a VRML97 scene, using either Java or ECMAScript .

These HTML scripting techniques were later unified with Script syntax inside the scene as the X3D Scene Authoring Interface (SAI).

This viewpoint slideshow is online at
https://www.web3d.org/x3d/content/examples/Basic/ExternalAuthoringInterface/viewpointSlideshow.html

Viewpoint image version history at
https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/Basic/ExternalAuthoringInterface/_viewpoints