!TopModel Problems:
-------------------

Known problems & limitations up to date:

- The X,Y coordinate (video) are stored within 16 bits each, so ,when clipping, I may have errors due to overflow...
- The maximum video work area extent is 2048*2048 pixel (now much less, due to the fact that I have to store a sprite of the same size for the window's redraw...), because of the dimension of the array to fill polygons and of the maximum values in the Bezier surfaces draw routine before overflow occurs...
- A surface object must stay within the first 32Mb of workspace (i.e. the maximum area to store primitives is now 32Mb that corresponds to 840000 triangles).
- Joining several times control points of a net of bezier surfaces, sometimes things may gone wrong (not dramatically but you lose the surface..)

Known bugs not corrected up to date:

- When you use lights or merge 2 or more files, sometimes you cannot enter Phong view mode nor save
  in 16/32bpp format or you get strange results out of the picture. To recover your file,
  DELETE all the lights and recreate them.