How to format posts on this forum?

edit

Not exactly Markdown, but close to it, you can discover the syntax by editing a post and clicking on the icons on top of the edit section (e.g. B, I, planet, ", 101010, picture,...).

For example bild is obtained with **, italic with *, and so on.

Regarding formatting Sage, you can have a monospaced code either with the button 101010, or by adding 4 spaces at the beginning of very code line.

I edited your other question, you can check the markup by editing it.