Help Macro Thread Titles?

So I was just adding a new Macro when I noticed something new to the feature. I went looking to make sure there wasn't something already posted about it. I didn't find anything, but I apologize if I just overlooked an area. Was wondering what this new Thread Title feature is that's a part of the post macros.

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It's a predefined thread title you can set up and use.

 

I updated the add-on the other night and this is one of the new features. The function is pretty much self explanatory and rather minor so I didn't feel it necessary to post a notice, but yeah. It's there.