For equations and flowcharts, I would argue that the rendering is more important than the textual "code", so a "preview block" with rendered output would be ver

For equations and flowcharts, I would argue that the rendering is more important than the textual "code", so a "preview block" with rendered output would be very useful already. A much better UI would be something like what you described, such as - https://github.com/benrbray/prosemirror-math?tab=readme-ov-file https://github.com/benrbray/prosemirror-math?tab=readme-ov-f... - https://support.typora.io/Math/#inline-math https://support.typora.io/Math/#inline-math