The Textsmith has companions: programs and plugins made in the same spirit, for working with text from the keyboard.
hande
A bookmark manager for the terminal. Web addresses, files, folders and commands, organised in categories and opened by name or by a short key.
narrowText.vim
Emacs-style narrowing for Vim and Neovim. Work on one function or paragraph of a long file, with the rest safely out of the way until you widen again.