I want to make annotations.
https://gyazo.com/d3cef6bdf967fe75480c22dac4ad61be
While a complete unidimensionalization would cut off branches growing out of the main flow, if the author feels it would be beneficial for the reader to know about them, he or she can put them on the same page in the form of footnotes and use annotation, which is clearly separate from the main flow. I use annotation, which is clearly separate from the main flow of the document. This is when I, as the author, want to use annotations. ---
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