Graffiti it is a rapidly developing art form whose value is highly contested and reviled by many authorities while also subject to protection, sometimes within the same jurisdiction. Both "graffiti" and its occasional singular form "graffito" are from the Italian word "graffiato" ("scratched"). "Graffiti" is applied in art history to works of art produced by scratching a design into a surface. A related term is "sgraffito", which involves scratching through one layer of pigment to reveal another beneath it. This technique was primarily used by potters who would glaze their wares and then scratch a design into it. In ancient times
Singular they presumption about the sex of the person referred to", as in One explanation given for some uses of "they" referring to a singular antecedent is "notional agreement", when the antecedent is seen as semantically plural: In other words, in the Shakespeare quotation "a mother" is syntactically singular but stands for all mothers, and in the Shaw quotation "no man" is syntactically singular (demonstrated by taking the singular form "goes") but is semantically plural ("all" go [to kill] not to be killed), hence idiomatically requiring "they". Such use, which goes back a long way, includes examples where the sex is known,