2. It means that what you see here in the reply title is all there is. There is no text below.
Therefore, they say n/t or sometimes nt. It goes above in the reply title.
It also means that you don't need to click on the post to see everything that is written.
I expect to pass through this world but once; any good thing therefore that I can do, or any kindness that I can show to any fellow creatures, let me do it now; let me not defer or neglect it, for I shall not pass this way again. Stephan Grellet