READ THIS! use arrow keys anyway, PToS stands for Periodic Table of Squirrels. In short, it's a way for me to learn my elements. I've only got a few done, but I'm planning to do all 118. C: I don't have a gray marker (i colored these with marker) so I marked the ones I need to color gray with "wip". (work in progress) You can do this too, I really don't care, but please credit me?? Song by Never Shout Never.