skecth implementation

    Opps! the attachment!

Hello!,

    I have implemented a very preliminary version of what could be a
possible starting point.  It is attached as a .ZIP file to this message.
There are no makefiles, just a VisualC++ workspace.  I'm sorry of this,
but right now is the compiler that i have at hand.  Otherwise, it should
compile and link without trouble.

    Please read the "coding style.txt" for a brief description of the design
style taken.  Also note that this implementation reflects my own personal
thoughts about how it could be done, for sure other people will have
different viewpoints.  Everything is missing, i have just added the important
details so the idea i try to explain is understood.

    I'm waiting for comments and new ideas!  :-)

    /AITOR