La llamada Oxford comma o también Serial comma, sigue diferentes reglas. Hoy os traemos otra de ellas:
Use a comma to set off parenthetical elements, as in «The Founders Bridge, which spans the Connecticut River, is falling down.» By «parenthetical element,» we mean a part of a sentence that can be removed without changing the essential meaning of that sentence. The parenthetical element is sometimes called «added information.» This is the most difficult rule in punctuation because it is sometimes unclear what is «added» or «parenthetical» and what is essential to the meaning of a sentence.
Si quieres leer nuestro anterior artículo, que hacía referencia también a la coma Oxford, pincha aquí.