As the name implies, it’s a preset of anchor points that you can quickly set with just one click of a button. Its design was heavily inspired by one of Unity’s UI tools, which I discovered thanks to this post.
Remember when you forgot to anchor your GUI, and by the time you realized it, you already have finished positioning it and had to change the anchor and redo the job all over again? Say no more! With the new retain position feature, the GUI will no longer move when changing the anchor while this feature is enabled.