[racket] Template Variables

From: Greg Graham (GGraham at cistercian.org)
Date: Wed Aug 29 08:58:46 EDT 2012

I am working the HtDP, and I have a question about Beginning Student Language description on http://docs.racket-lang.org/htdp-langs/beginner.html . Section 1.2<http://docs.racket-lang.org/htdp-langs/beginner.html%20.%20Section%201.2> describes "Template Variables", which are a series of dots. What are they used for?


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