a letter, numeral, or symbol written below the line and to the right of another character, in contrast to a superscript. It is set in a type smaller than the text size.
A variety denomination shall be considered to cause its users difficulties as regards recognition or reproduction in the following cases:
(a) where it is in the form of a "fancy name": ... (vi) it contains a hyphen, a blank space other than between the entities of which it consists, another mark, an upper and lower case mixture within the entities, a subscript, a superscript, a symbol or a design ...
