-[this wonderful series of blog posts](http://peter.michaux.ca/articles/scheme-from-scratch-introduction))
-from C to forth, but I plan to go a bit beyond this by implementing some
-nice features like garbage collection, macros and a more complete numerical
-tower to bring it closer to [R5RS](http://www.schemers.org/Documents/Standards/R5RS/).
+[this wonderful series of blog
+posts](http://peter.michaux.ca/articles/scheme-from-scratch-introduction)) from
+C to forth. In addition, this interpreter has a mark-sweep garbage collector.
+In future, I plan to also implement a macro system, file io, and a more
+complete numerical tower to bring it closer to
+[R5RS](http://www.schemers.org/Documents/Standards/R5RS/).
+
+The goal is for the interpreter to be complete enough to be used to complete
+the majority of the exercises found in [SICP](http://sarabander.github.io/sicp/).