hence I would suggested to simply name it "HTML"
Tools > Options > Load/Save > <topic>
It contains font sizes for H1..H9, some import and export settings. Request is a WFM to me, I read "compatibility" similar to "options". The proposal of pure "HTML" sounds inferior and too short. Would be good to get opinions from native speakers.
Provided it's on Load/Save section, it's quiet self explaining and could be shortened to HTML, but on the other hand I find always good to be more explicit :) so it would be also a WFM, but would let native speakers comment :)
Compatibility is fine, => WFM
WFM is also ok for me.
All are for WFM, so let's resolve this.