From: lecoat@atari.org   
      
   Hi,   
      
   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)