The Visual Reality Modelling Language has a variety of powerful mechanisms that provide the content creators with almost unlimited capabilities of building 3D content. However, in certain cases, the implementation of the content creator's intent with the use of scene elements described in the VRML97 Specification can lead to a large file size, low performance of the VRML browser, etc. To broaden capabilities of content creators Cortona3D introduced support of a number elements as VRML extensions in Cortona3D Viewer. These extensions were implemented as new extension nodes or extended functionality of standard VRML nodes.