\section{Inventor and VRML}
\label{Inventor_VRML}
Let me give an example of what an Inventor file looks like:
\begin{quote}
\begin{verbatim}
#Inventor V1.0 ascii

Separator {
    Separator {
        Material {
            diffuseColor 0.0 0.0 1.0 # Blue
            transparency 0.25        # 25% transparent
        }
        Sphere {                     # A sphere
            radius 1.5               # of radius 1.5
        }
    }
    Separator {
        Transform {
            translation 3.0 0.0 0.0  # We move a bit
        }
        Material {
            diffuseColor 0.0 1.0 0.0 # Green
        }
        Cube {                       # A Cube (of default dimensions)
        }
    }
}
\end{verbatim}
\end{quote}
As you can see, it is a plain text (ASCII) file, with nice commments in it.
The {\em Separator\/} command acts as logical paranthesis.
You can view the file 
\linkf{here}
{http://www.astro.ku.dk/\~{}milvang/RelViz/Intro/intro.iv}.

Now, if we in the above Inventor 3D scene replaces ``Inventor'' with
``VRML'' in the first line, we have a VRML 3D scene!
You can view it
\linkf{here}
{http://www.astro.ku.dk/\~{}milvang/RelViz/Intro/intro.wrl}.
