Syntax of the VRML language

structure of a VRML file:

• header
  All VRML files must have the following definition at the top of the source file:

  #VRML V2.0 utf8
  

  This means that the file is a VRML file, compliant to version 2.0, and uses the utf8 character set (which is compatible with the ascii character set)
• comments
  All text after a # is interpreted as a comment
• Node definitions One or more Nodes must be defined in the file in order for an object to be rendered on the screen. The following is an example of a Shape node:

  Shape {
  	appearance Appearance {
  		material Material {}
  	}
  	geometry Box {
  	size 3 4 5
  	}
  }
  

  A Shape node is one of the most common nodes in VRML, it specifies what are the visible characteristics of the object, what is it made of (a texture or color), and the geometry of the object.

  The following is the code that would render a box 3 units wide, 4 units tall, and 5 units deep:

  #VRML V2.0 utf8
  
  Group {
  children [
  appearance Appearance {
  		material Material {}
  	}
  	geometry Box {
  	size 3 4 5
  	}
  ]
  }
  

  Note that the group node groups together multiple nodes in its children field. You can specify multiple primitive shapes as children and they will be rendered and interpreted as one homogeneous object.