From VRML 2 Basic Concepts and Definitions CPS616 -- Information Track of CPS -- Spring Semester 98. byZeynep Ozdemir, Rob Baker, Meryem Ispirli, Geoffrey C. Fox
ROUTE statements may appear at either the top-level of a .wrl file or prototype implementation, or may appear inside a node wherever fields may appear.
The types of the eventIn and the eventOut must match exactly.
For example, it is illegal to route from an SFFloat to an SFInt32 or from an SFFloat to an MFFloat.