Perhaps surprisingly, orthogonality also applies to documentation. The axes are content and presentation. With truly orthogonal documentation, you should be able to change the appearance dramatically without changing the content. Word processors provide style sheets and macros that help. We personally prefer using a markup system such as Markdown: when writing we focus only on the content, and leave the presentation to whichever tool we use to render it.[17]
I’m not convinced content and presentation are orthogonal
