How do you link to a thread and show the exact post your referencing?

Lately I’ve seen a lot of people reference a post and miraculously get the link centered to the exact post in the thread. How is this done?

From the FAQ at the top of this forum I copied this…

Linking directly to a post within a thread

To link directly to a post within a thread, modify appropriately the following URL
by replacing NNN with the postid. Here’s how you find the postid for a post:
If you position your mouse button over the “quote” button at the bottom of the post, you should see a link appear in the “status bar” of your browser (usually at the bottom of the browser window), and the link will show the postid for that post. If that doesn’t work, you can press the quote button, and a new reply window will open. The URL for that reply window should show in the URL field at the top of your browser window, and the URL contains the postid for the post.