(There's no video for Alpha 7.x (LaTeX editor) yet. Please contribute to MR and add a video now!)
Alpha is a very powerful, multi-purpose editor that allows any program - or user - defined function to be bound to any keystroke, or placed into user-defined menus. Every menu is defined in the macro language Tcl by one of the startup files ("AlphaBits.tcl" or one of the files sourced from inside it).
Alpha is multi-modal, which means it switches between different modes depending on which type of document you are editing. Everybody who has used Emacs knows about this concept. The idea with different modes is to change Alpha's behavior depending on which kind of text you're editing. For example if you're programming in C++ or editing a LaTeX document you of course want different features.
alpha-7-1-5.img.sit (2.4 MiB / 2.51 MB)
Alpha v7.1.5 (1998) / DiskCopy image, compressed w/ Stuffit
Architecture: 68K + PPC (FAT)
At least 2.6MB of free RAM (recommended 3.5MB)
Mac OS 7.x - Mac OS 9.2.2
Emulating this? It should run fine under: SheepShaver