Что означает "Oxford comma" в Английском языке.

The "Oxford comma" is a comma used before the conjunction ("and" or "or") in a list of three or more items. Also known as the serial comma, it is optional and typically used in British English and some style guides, including The Chicago Manual of Style and The Oxford Style Manual. Its purpose is to clarify the separation between the last two items in the list. For example, in the sentence "I like apples, bananas, and oranges," the Oxford comma is the comma after "bananas." Its use can help prevent ambiguity or misunderstandings in certain contexts.