From: gneuner2@comcast.net   
      
   Our esteemed moderator wrote:   
      
   >[How does [Strahler] compare to Sethi-Ullman numbering? -John]   
      
   AFAIK, the "numbering" portion of Sethi-Ullman is computing the   
   Strahler numbers of the expression tree.   
      
   The code generation portion of their algorithm recognizes that the   
   Strahler numbers bound the number of registers required to compute the   
   sub-expressions at each level and uses that knowledge to minimize the   
   total number of registers used.   
      
   George   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)