From: sjack@dontemail.me   
      
   dxf  wrote:   
      
   > Great.  While I've seen co-routines mentioned, examples were rare so I   
   > tended to ignore it.   
   >   
      
   -- A closed paren defined as an immediate co-routine can be used at   
   -- compile time to divide a word into two parts.   
   -- At run-time the word's first part executes then performs co-routine   
   -- and somewhere down the input ')' performs co-routine to return control   
   -- back to the the word's second part.   
   --   : foo( first part ) second part ;   
   -- Example:   
      
   : foo( ." --> " s0 @ sp! ) begin depth while 5 * . repeat ;  OK   
      
   foo( 3 2 1 ) --> 5 10 15  OK   
      
   I use 'hi( foo bar baz )' to highlight the output of a sequence of   
   Forth words.   
      
   --   
   me   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)