From: lecoat@atari.org   
      
   Hi,   
      
   Here is also  surface.   
      
   Francois LE COAT writes:   
   > Here are two surfaces from Eureka 2.12 rotating in space...   
   >    
   >  the Bretzel surface   
   >  the Archimedean spiral   
   >    
   > These are two surfaces from Eureka 2.12, but they are represented   
   > in space using MathMod 12.1. MathMod can be found here:   
   >    
   >    
   >    
   > I recommend it to you. Most of what can be done with MathMod can   
   > be done with Eureka 2.12, and vice versa. It's fun!   
      
   Enjoy it's yours =)   
      
   --    
   François LE COAT   
   Author of Eureka 2.12 (2D Graph Describer, 3D Modeller)   
   https://eureka.atari.org/   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)