Thanks for your replies with regards to this subject.

It is all starting to make some sense now.  If I understand correctly then, the 
C++ module generates an in-memory texture that the xml files reference for 
displaying within the OSG tree.  This texture is being continually re-generated 
to provide a 'dynamic texture'!

Can I assume that this this is the standard way to generate dynamic graphical 
information on screen?

Essentially what I am looking to do is create some instruments of my own with 
some detailed generation of graphical entities that are being continually 
updated.  I am therefore assuming that a 'dynamic texture' is the way to go 
with this.  If there is another way, perhaps better, then I am open to 


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sense of it. IT sense. And common sense.
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