What is the code to make a single post a link?
Go to the post you want to link. Click on the Post # in the upper right hand corner of the post. Copy the URL. Start your post (if you hadn’t already). When you want to insert the link, clink on the globe/chain icon, then (i) if you want text other than the link to show in your post, type it there, click Okay, then (ii) paste in the URL you copied and click Okay.
Like this.