For use with Boolean Algebra. ' acts as bar for those used to typing that way(left and right version do, too) . acts as dot as well as * acts as dot The EXOR mapped to @ and EXNOR mapped to ? symbols are also included. I tried to map things to what made sense. | makes the back-kerned box for if you want to make K-MAPs with this. (That is the straight line, not capital i) Double bar naturally comes from " and the left and right versions of it. _ makes the Sigma. May take a little getting used to, but tell me your thoughts in the comments section