I use org-mode often. It's a very intuitive way of structuring notes because most things are hierarchical in nature and lend themselves well to infinitely neste

I use org-mode often. It's a very intuitive way of structuring notes because most things are hierarchical in nature and lend themselves well to infinitely nested lists. It really pairs well with The LISP Way™️. I use it to make flashcards (csv format for Anki) out of my notes. The front side is the hierarchy of a headline to its parents, and the back is the text below the headline. e.g., * Python3 ** I/O *** modes - 'r' open for reading (default) - 'w' open for writing, truncating the file first - 'x' open for exclusive creation, failing if the file already exists - 'a' open for writing, appending to the end of the file if it exists - 'b' binary mode - 't' text mode (default) - '+' open a disk file for updating (reading and writing) ...makes a flashcard like: -------------- -------------- | Python3 | - 'r' ... | | :: IO | . | | :: modes | . | | | . | -------------- -------------- source for undocumented spaghetti code: https://github.com/hackharmony/org-to-anki-csv/blob/master/org-to-anki.el https://github.com/hackharmony/org-to-anki-csv/blob/master/o... However I would say that there are much better markup languages out there. (Or better yet, don't use a markup language at all and use richer formats. We're not in the PDP11 era anymore.) It's good if you need version control though.