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<span class="number">3A</span> <a class="link" href="https://ocw.mit.edu/courses/6-001-structure-and-interpretation-of-computer-programs-spring-2005/3a-henderson-escher-example">Henderson Escher Example<span class="nowrap">⁠<svg class="external" width="24" height="24" aria-hidden="true"><use xlink:href="#external"/></svg></span></a>
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<a class="anchor__link link" href="#1" aria-hidden="true">#</a> Part 1
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