I used many text editors over the years. At one time, I used PFE, the Programmer's File Editor, which was lightweight and fast, on Windows. It had a feature

I used many text editors over the years. At one time, I used PFE, the Programmer's File Editor, which was lightweight and fast, on Windows. It had a feature of being able to open large files. https://en.m.wikipedia.org/wiki/Programmer's_File_Editor https://en.m.wikipedia.org/wiki/Programmer's_File_Editor https://www.lancaster.ac.uk/people/steveb/cpaap/pfe/ https://www.lancaster.ac.uk/people/steveb/cpaap/pfe/