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Comment by sydthrowaway | Hacker News Reader

Without drawing graphs and equations, it is absolutely useless.

I’d give anything for a Markdown supported editor with freehand drawing (a true alternative to OneNote)

You can always reinstall `ditaa`. But, re: drawing, these seem promising.

Very cool, thanks for sharing.

I actually just started doing this in my architecture notes.

You can inline source code in org-mode that renders a graph png.

  #+BEGIN_SRC dot
  digraph {
    a -> b
    b -> a
  }
  #+END_SRC

You can look into graphviz and dot language for intricacies. Once you learn it, it's super useful to jot down ideas and change structures on the fly.

It is worth noting that org-mode does support latex fragments out of the box.

> Without drawing graphs and equations, it is absolutely useless.

For you maybe, I use org mode a lot and never feel the need for having graphs and equations in my workflow.