<details> and <summary> have been enabled. you can use the html tags themselves, or use this markdown syntax

??? "summary goes here"
    indented stuff here will be in the details thing

    - you can
    - do formatting
    - in here too

will produce

summary goes here

indented stuff here will be in the details thing

  • you can
  • do formatting
  • in here too

<sup> and <sub> have been enabled. currently there is no markdown syntax for these, give me a few moments

tables have
also been
enabled (using the regular markdown syntax for them
though you can use the html tags too if you want