History of Notebook User Interface
![Mathematica version 1 1988 gRgn7](i/Mathematica_version_1_1988_gRgn7.png)
![tunknown vF8SV](i/history_of_notebook_vF8SV.png)
〔We've Come a Long Way in 30 Years (But You Haven't Seen Anything Yet!) By Stephen Wolfram. At https://blog.wolfram.com/2018/06/21/weve-come-a-long-way-in-30-years-but-you-havent-seen-anything-yet/〕
1987 the Mathematica frontend takes shape https://www.wolfram.com/mathematica/scrapbook/1987/02/08/1987_frontend-2/
![notebook interface history 2021-03-19 Z7Mp8](i/notebook_interface_history_2021-03-19_Z7Mp8.png)