These visualizations were originally intended as posters that I put up in Cafepress. I used the great OmniGraffle to create these diagrams. The PDFs are now available in the form of OpenRCE. The visualizations have been created by Ange Albertini, who has inspired me to share them with the world’s most famous visualizations of the PE format. The diagrams were created in the early 1990s and early 2000s. They were intended to be posters that were later used as posters. They are now free to download in the format format.”]
Source: http://blog.dkbza.org/2007/05/scanning-data-for-entropy-anomalies.html