Char table of Unicode's "General Category".
All Unicode characters have one of the following values (symbol):
Lu, Ll, Lt, Lm, Lo, Mn, Mc, Me, Nd, Nl, No, Pc, Pd, Ps, Pe, Pi, Pf, Po,
Sm, Sc, Sk, So, Zs, Zl, Zp, Cc, Cf, Cs, Co, Cn
See The Unicode Standard for the meaning of those values.