My bad. Here is the missing reference: https://jupyter.org/ Jupyter notebooks (often referred to as just “Jupyter”) is a form of documentation/writing/computation environment (there is a server which runs a “Jupyter kernel” for some language (originally just Python and then others have been implemented) and a UI that works as an IDE for a document-first experience). The reason I posted my message above is that I would love to see an OS that has an evolved calculator with some mode/layout inspired by Jupyter, probably to be named “notebook” and placed along “basic” and “scientific” as an option in the calculator menu if I was building an OS but I am not a designer. Jupyter is like “literate programming” but interactive and I would like to se an OS calculator that leverage that approach for academic work for both students and teachers because OS calculators are free, but given you make an OS I guess you could make it a stand-alone program and also make it free, anyways that is like 20 convos away. Given the OS can integrate accounts and authentication mechanisms you could enable both tests and homework to be redacted and delivered from the notebook app between teachers and students. With a math calculator and LaTeX should be enough to build a great experience as physics and chemistry can be dissected into those two naturally.