[plt-scheme] which teachpack contains (make-posn)

From: Terrence Brannon (metaperl at urth.org)
Date: Mon Feb 9 15:16:37 EST 2004

I skipped ahead to Chapter 6 in HtDP but that chapter did not specify 
which teachpack contained (make-posn). Loading the draw teachpack worked 
for |

(start 300 300)| ; which opens a canvas;

|but failed for:

|(draw-solid-line (make-posn 10 10) (make-posn 110 10) 'red)

|because make-posn was undefined.


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