?matches at most one character from the set below:
\/the literal / (4710 / 578 / 2F16)
\?the literal ? (6310 / 778 / 3F16)
\=the literal = (6110 / 758 / 3D16)
\&the literal & (3810 / 468 / 2616)
\#the literal # (3510 / 438 / 2316)
.the literal . (4610 / 568 / 2E16)