-This is the namespace for SICP examples, exercises and problems. To
+This is the repository for SICP examples, exercises and problem sets. To
use these programs, add the parent directory of this repo to your classpath.
+
+See: <http://rkrishnan.org/2010/03/14/sicp-study/>
+for background and other information.
+
+* A note on section 2.2.4
+
+See src/pictlang/README
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