There are not two versions of the glue, but it can be either permanent or repositionable depending upon how you use it. (Isn’t that cool???)
To understand it better, try this: put a tiny bit on a piece of scrap paper and set it aside. Put a tiny bit on another scrap of paper and put another scrap on top of it. In a matter of seconds, these will be bonded together. It’s permanent! Meanwhile, the first scrap that you allowed to dry is now clear and even tackier than when it was wet. If you stick another scrap on top, it adheres but you can pull it apart and stick it back together–kind of like a Post-It NoteTM–but much, much stronger. That’s re-positionable!
Permanent or Re-positionable…You Choose!