Sure - this is new comment box when you open up an existing topic:
I entered the bold text using the Ctrl-B keyboard shortcut. Clicking the only visible menu icon slides in a limited text editing toolbar:
And advanced mode switches to markdown:
Editing help opens another page describing markdown:
https://help.fasthosts.co.uk/app/community/utils/editing_help
Not sure that link will work so here’s a PDF print of the page:
Advanced Editing Help.pdf (84.6 KB)
I entered some text that gets interpreted as markdown and it prefixed it correctly. For example, people often put #1 at the start of a line which turns it into a header. In this editor, #1 worked as expected and when I switched to advanced/markdown it had been prefixed as \#1
I asked on the community if the moderators knew which system it was and they said Oracle. Zero knowledge of Oracle these days but maybe it’s Lithium?