,
right 
,
up 
and
down 
.
The speed with which the model moves is determined by how far you drag
the mouse.
If you are using a computer that already has a VRML viewer
installed, just click on the link to a .wrl model file.
If necessary, give permission for the ActiveX control to run.
See below for brief instructions on using
the Cortona viewer (for MS Windows).
There are many free VRML viewers that can easily be installed on your computer as Web-browser plug-ins or helper applications. Which one is best for you will depend on your computer and on your preferences.
Our Thrup’ny viewer is designed for use with these models and provides the feature of being able to delete and undelete parts of a model. It is currently available for Linux and Windows.
On the left side of the Cortona window are seven icons: the top three
represent different navigation modes, and the bottom four represent different
types of motion within those modes.
For viewing anatomical models you will normally want to be in
the study navigation mode,
usually in turn mode.
To move the model, position the
mouse over the background
so the cursor is an arrow.
Click and drag the mouse to turn the model
left ,
right ,
up and
down .
The speed with which the model moves is determined by how far you drag
the mouse.
If your mouse is positioned over
part of the anatomical model, the cursor changes to a hand with an
anchor 
and a label is displayed.
You can also zoom in and out, change the speed of interaction and
do many other things. For more detailed information, right-click in
the Cortona window and select .