Sigmas
There are 4 main sigmas that you can find on this page. These 4 sigmas consist of The Uppercase Sigma, which is self-explanatory. The normal sigma is well, y'know, the normal sigma. The final sigma doesn't have much to say about it. And the lunate sigma is a combination of the normal and final sigmas. (This means the lunate sigma can be in the place of both normal and final sigmas).
