Length of harpoons

Is it possible to adjust the length of harpoons with latex/mathjax? Because whenever I add text above and below it, it doesn’t automatically adjust its length like \xrightarrow does.

Also, is there like a list of everything latex-related AnkiDroid supports? I think sometimes I google my problems and certain relatively more complicated coding fails to work. The manual says it provides ‘some’ support for latex—where can I find the details further to this?

Bump.

Would need to consult with in MathJax or Latex docs

Ankidroid will follow Anki backend, if Anki has full latex/mathjax support, then ankidroid will have as well (theoretically)

Ankidroid has their first 2.17 beta release