The two patterns are for:
1. Which way is which socks
These fancy socks use a charted ribbing design to create a lovely diagonal diamond pattern. It's very simple; there are just K and P stitches, and each row is knit four times before you change patterns. This stitch pattern gives you a lovely, calf-conforming, never-drooping sock which easily fits many sizes from skinny to muscular legs. Here are a couple of photos; there are more on the pdf:
2. Fiber optic socks
These socks use simple increases and decreases to mimic a cable stitch. Fun and easy to memorize, you need no cable needle, the rows go quicker than real cabling, and you can carry the work and knit anywhere. My apologies, but I have no photo to post here; there are photos on the pdf. I cannot find my original digital pics; my computer is having conniptions when I try to copy the photos out of the pdfs I made; and the original socks were sent out some time ago as a gift in a secret partner exchange! Why the name "fiber optic?" Because there's a techno war underway between Verizon and similar companies providing fiber optic services and the cable companies!