A venerable editor from back in the days when a FOSS ecosystem was first evolving and developing its philosophical groundings. The geeks will bore you to tears about it, but actually that matters and it is the reason the tech scene is what it is. It's a sterling portable editor which, once you have learned a few commands, can see you doing whatever it is you need to do to get creative with a computer. Christopher Rozruch, editor-in-chief and lead developer of Marginálie typically writes fiction and even code in Emacs but very often does his system administration using vim which is a standard editor in the Linux distributions Ubuntu, Fedora, and Debian, which he finds himself using most often while working on the administrative side of the projects you see here. There are some simple operations like reading files into a buffer which he also uses on vim when he doesn't know how to do them on Emacs. There are some good tutorials to using vim, which can be initially intimidating since it is a ur geek joke that most people don't initially know how to exit it. Once you get that, it is a capable editor, though it may take some time to figure out if you have not yet go to grips with the handful of very efficient key stroke commands yet or if you are not a modal thinker, as @krozruch is not.