Use the Markdown Editor app in Nextcloud

The advantage of plain text is that there’s no extra computer-specific information cluttering up your otherwise human-readable writing. The good thing about computers is that they’re programmable, and so as long as we humans agree to follow very specific conventions when writing, we can program computers to interpret human-readable text as secret instructions. For instance, by surrounding a word with two asterisks, we not only give a visual cue to humans that a word is significant, but we can also program computers to display the word in bold.