(echo nil t)

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Santiago Carbonell

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Aug 29, 2012, 4:07:02 AM8/29/12
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In this construct:
 
....
(do ((answer (normalize-answer 
     ($send meta-processor :babylon-read2 (list *help-key*)))
   ($send meta-processor :choose-from-menu item-list label))  
  (echo nil t))
....
 
What's doing (echo nil t)?
 
Echo is a function?
 
What's returning?
 
Thanks
 
 
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