Design by Numbers (DBN)
TL;DR: For documentation of the language, go to: https://docs.racket-lang.org/dbn-manual/index.html. This on the other hand, is the source repository, mostly useful if you're contributing or reporting bugs.
Design by Numbers (DBN) is both a language and a book by John Maeda that was created to help people who were artists and designers understand how to code and the purpose behind coding. The language itself is simple with very few commands in an effort to make it easy to remember the syntax.
Today, finding working versions of DBN can be challenging so we created a version that runs on top of the Racket ecosystem. To use this, you can download Racket (http://racket-lang.org) and go to File | Package Manager. From here, you can download and install design-by-numbers (this repository) and you can use the language by putting #lang racket at the top of your file.