The Wrap Box is useful when you want to arrange items within a container and have those items appear aligned and evenly spaced and automatically format the contents inside it based on the width of the container.
Take for example the image below where we have created a "shop" screen of sorts where several items are presented to the player.
The white images above could represent different items that the player could buy when clicking on an item, then clicking the purchase button. In our example say we wanted to remove the item from the shop when it has been purchased or add an item to the shop when the "sell" button is pressed (of course you would probably want a pop-up menu to select the item you want to sell but this should convey the idea).
For example, "buying" and removing items would automatically update the window: