The Vietnamese term "dấu ngoặc vuông" refers to what we call "square brackets" in English. These are punctuation marks that look like this: [ ].
Square brackets are primarily used in writing to enclose additional information, clarifications, or comments that are not part of the main text. They can also indicate modifications made by someone other than the original author of a quote.
Square brackets are often used in academic writing or editing. For instance: - In quoting someone, if you change a word for clarity, you might write: "He [the teacher] explained the concept." The bracket shows that you have inserted "the teacher" to clarify who is being referred to.
While "dấu ngoặc vuông" specifically means square brackets in the context of punctuation, it does not generally have other meanings outside of this context.