I had no idea since I stumbled across this old craft/art form of knotting, Chinese macrame elevated if you want to go far:

http://www.co.middlesex.nj.us/culturalheritage/chineseknotting/gallery.html

Simple instructions on basic knots under "Knots" at the above website.

could be useful add-on /integration for garmets, jewellery, etc.
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