I like to use the vim plugin DrawIt for ascii diagrams: https://www.thegeekstuff.com/2009/12/how-to-create-ascii-drawings-in-vim-editor-draw-boxes-lines-ellips

I like to use the vim plugin DrawIt for ascii diagrams: https://www.thegeekstuff.com/2009/12/how-to-create-ascii-drawings-in-vim-editor-draw-boxes-lines-ellipses-arrows-inside-text-file/ https://www.thegeekstuff.com/2009/12/how-to-create-ascii-dra... https://github.com/vim-scripts/DrawIt https://github.com/vim-scripts/DrawIt Pretty easy to create comments for code that need a drawing for clear expositions.