Thank you for this detailed post about Markdown! 👍

I’d like to add a few clarifications. Markdown, at its core, is a lightweight markup language designed to simplify converting plain text to HTML but it does not accept HTML as input. However, on blockchains like Blurt, Hive or Steem, an enhanced version of Markdown is used. In addition to standard Markdown tags, it also allows certain HTML tags (<center>, <hr>...) that aren’t available in traditional Markdown, as well as specific classes, like "pull-left" and "pull-right", to adjust element alignment.

A quick note as well: to add red text, you can use the class "phishy" like this:
<div class="phishy">red text</div>