Knitting experiments. Currently obsessed with entrelac.
I developed this charting method in 1978, but haven't done much with it lately.
Edit: Thanks to Fleegle, I looked this up, and it's actually called "Ivy Leaf," on page 298 of Barbara Walker's A Second Treasury of Knitting Patterns.
Hey, wow! I invented the same charting system about ten years ago! My symbology is a tad different, but it shows the vertical flow the same way -- cool!