Nocc:Html display struct/qqq

This is a prompt of a yes/no switch. If set to true (yes), NOCC will render few simple formatting options commonly used in plaintext ASCII e-mail via html markup, such as: "+-" → "±", and "xyz^2" → "xyz²", and "*strong*" → "strong", and "/emphasised/" → "emphasised", and "_underlined_" → "underlined", and "|code|" → "code".