Piet was named after the Dutch painter [[Piet Mondrian]].<ref name="Cox2013">{{harvnb|Cox|2013|p=6}}</ref> The original intended name, ''Mondrian'', was already taken by [[Mondrian (software)|an open-source statistical data-visualization system]].<ref name=":0" />
=== REON-4213 ===
The REON-4213 programming language is an example of a mixed esoteric language, programming language, and [[musical language]] blended together and used in the video game series of ''[[Ar tonelico]]''. This unique format allows a [[video game]] to broach the subject of programming in an entertaining manner that is suitable for younger audiences.
Although this language cannot be used to express application code it uses concepts from real programming languages such as [[C++]] and [[JavaScript]] to introduce the ideas and structures of software code.
=== Rockstar ===
Rockstar is a computer programming language designed for creating programs that are also [[hair metal]] power ballads. It was created by Dylan Beattie.<ref>{{cite web |title=rockstar: home |url=https://codewithrockstar.com/ |website=codewithrockstar.com}}</ref><ref>{{cite web |last1=Lewrypublished |first1=Fraser |title=Meet the boffin behind a computer programming language based on power ballads |url=https://www.loudersound.com/features/meet-the-boffin-behind-a-computer-programming-language-based-on-power-ballads |website=loudersound |language=en |date=1 August 2018}}</ref><ref>{{cite news |last1=Doctorow |first1=Cory |title=Rockstar: a programming language whose code takes the form of power ballads |url=https://boingboing.net/2018/07/25/hello-cleveland-world.html |work=Boing Boing |date=25 July 2018}}</ref>
