VRML File Structure

A VRML file always starts with the header: 
#VRML V2.0 utf8 
The identifier "utf8" which appears on the header lets you use international characters in your VRML models.

 Comments start with #, all characters until the end of the line being ignored. 

After the header the following can appear: 
nodes 
prototypes (Not done yet)
routes 
In the next sections one shall see what each of the above is used for.

 Note: For precise syntax and semantic definition please consult the VRML 2.0 Specification

The color model in VRML is RGB. In order to define a color three values are needed: Red Green and Blue, these values are between 0.0 and 1.0. For instance 0.0 0.0 0.0 is Black, 0.0 0.0 1.0 is Blue, and 1.0 1.0 1.0 is White. 

The units in VRML are assumed to be meters. Although you do not have to follow this convention it is advisable that you do. If everyone follows this convention then all worlds will be scale compatible. 

The angles in VRML are measured in radians, not in degrees.