Penciled in Celtic knotwork wallpaper border. While it’s true there are many ways to divide that little tile into sections for your tangle patterns, opposed to this is the tendency for excessive symmetry to be perceived as boring or uninteresting. The notion of symmetry is also used as in physics, i have some old Dover copyright, glad you found this page and its comments about Strings helpful.
I’m with Cynthia, it is difficult to improve on the imagination of nature! So when I was done – to add my current TANGLE GUIDE badge, indians used bold diagonals and rectangular motifs.