http://qs321.pair.com?node_id=11103240

How do I quote a post when replying to it?

I've read the Writeup Formatting Tips linked to from the editing window, and the FAQ, but neither mention it. Please update that documentation as well.

Thank you.

Edited to add:
For example, LanX and choroba quoted each other and me at https://www.perlmonks.com/?node_id=11103184