Here are a couple of videos which I found and added them to the knitting page.
"PhiMatrix is a design and analysis application for Windows or Mac inspired by Phi, the Golden Ratio. Use it to unveil the beauty of nature's proportions or apply it to your own designs and artistic creations. It overlays a variety of tranparent grids over any other program to let you see and apply the golden ratio and other proportions to any image, and is a great tool to achieve excellence in design and composition."
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