First, thank you for looking at this app. Second, Liberty is a dog. She hates knots. She will bite them and shake her head really fast when encountering knots such as those contained in this app. We made this app so others can study these knots for weaknesses and help Liberty in the fight against these knots. Or, if not, at least you can use them to secure things to your backpack or motorcycle or something and not lose things. We will update and add more complex knots over time. Thanks Again, Please Enjoy.