CDO has now enabled rich text editing. You can toggle back and forth between the existing post writing mode and the new editor using the button at the top left of the post you are composing (leftmost extent of the toolbar).
Anyone who has any tips or issues with this feature can share them here so all can benefit.
I’m composing my response emphasised textwith the new capability!! Wow, amazing. It’s nice to have the added flexibility here’s hoping I can keep it all straight