A CSprite is an ordered list of these elements, created with <CTRL-r>.  
Normally, they are packed together in a list and the address of the first is 
passed to routines.

See ::/Demo/Graphics/SpritePlot.HC, ::/Demo/Graphics/SpritePlot3D.HC, 
::/Demo/Graphics/SpritePut.HC, ::/Demo/Graphics/SpriteRaw.HC and SpriteMeshEd().

Be aware that copying SP, IB, or IS entries with the clip results in duplicate 
entries with different nums.  You can manually remove dups by editing with <CTRL
-t> and setting to the original num.

See ::/Adam/Gr/GrSpritePlot.HC for how CSprite are stored.