1. a thing to be added; an addition.

This is where I keep any updates to any articles that I write. For years I have been writing commentaries, then something else would happen after my article was published and I would ignore whatever new information that came out because I didn't want to write another whole article on something I had already commented on. Well those days are over. Here is where those updates will go. Just look at the bottom of the original article and if there is an update it will link you back to here.

same difference