I use Obsidian for note-taking and I absolutely love it and one of its cool features is that you can include CSS snippets to modify stuff. I recently formalised my structure for outlining my writing projects and then today I stumbled across callouts again and thought they were kinda cool for separating off things into chunks, and that they might work well for the way I do outlining. Then I saw that you can make custom ones with CSS snippets and now I've gone and made a whole bunch of custom callouts for my outlining structure
