25 march 2000
- don't show the bbox of a group.

27 january 2000
- Added the option to save the image to a ppm file
- Changed some default colors (background, frame, normals)
- Added some more buttons in the toolbar
- fixed reading of data from stdin
- Added 'invisible' option
- some GUI reorganization.
- Groups of objects can be created by the user
- Moving child objects don't work.

15 january 2000
- incorporated new scripts for octave (Peter Hopfgartner).

8 december 2000
- Changed the reading code to XML
- Changed the yacas and mathematica interfaces.

2 december 2000
- Removed GLP and use instead code from Mark Kilgard (thanks to Mark)
- Added a working spec file
- Help in spanish and english.

9 november 2000
- Superficie is actually usable from yacas, see yacas/superficie.yac

24 september 2000
- You can add up to 8 lights.
- There is very basic support for printing to postscript.
  (Thanks to GLP 0.1 by Michael Sweet <mike@easysw.com>)

11 september 2000
- The MESH object now becomes a QUADS object.

10 august 2000

- The button_up/down stuff works ok now.
- Changes in configure.in, to make it display a message when finishes,
  to tell the user what to do to continue the building process.

4 august 99

- bug fixes.
- The beginnings of an interface with yacas are here.
- Some support for transparents objects.

5 jun 99

- There is now a small c++ library which encapsules almost
  all of the non-gui functions.
- Better configure.in
- ...


1 jan 99
- Uses ctree instead of clist.
- Uses autoconf.
- Decide to remove c++ dependencies.
- Several changes to superficie.c; changed start behaviour: now
  a empty screen is displayed in place of the file selector.

20 october 98
- Fix a bug that caused nothing to display 
   if not linked against ElecticFence

17 october 98
 -There are many changes;
 	- There are now several object types:
        	MESH, LINE, POLYGON, and MULTIPLE.
                MULTIPLE is simply a list of other ojects, including
                another MULTIPLE object. See the examples.

        - A file can contain several objects, and all will be displayed
          in the same window.
        - The mathematica package is somewhat usable.
        - etc...


19 august 98
  -support for several type of objects is on the way
  -right now it can read several MESH objects, in a file.

17 august 98
  - a very crude mathematica package is working.
  - finally i learned to use the gnome comand line parsing routines, so
    clig is not in use anymore.


20 july 98
   - Normal vectors are now working.
17 july 98
   - If the color field is not present in the file, a default
     color array is generated
15 july 98
   - Now can read from pipes.
   - If invoqued with a non-data file, no longer aborts.
    (just ignore the file)

