Parentheses are comments sandwiched in the middle of the text.

Footnotes are notes that explain something and are printed at the bottom of the page. Footnotes and endnotes are supplementary explanations to the text. Footnotes are usually located at the bottom of the page and can be used as comments on the contents of the document.

2. Different roles

At first, the content of annotation was limited to the annotation of Confucian classics, and later it developed into phonetic notation, exegesis, word discrimination, chapter analysis, sentence analysis, textual research of famous things, inference of word meaning, collation of different texts, and indication of sources. Even informative appendices can be mixed with notes.

Footnotes and endnotes are supplementary explanations to the text. Footnotes are usually located at the bottom of the page and can be used as comments on the contents of the document. Endnotes are generally located at the end of the document, listing the source of quotations, etc.

3. Different uses

The purpose of annotations is unchanged, which is to facilitate readers and make them understand the text more comprehensively, profoundly and accurately.

Footnotes are used to take notes.

With the extensive use of punctuation marks and the popularization of horizontal printing, the font of brackets can be as big as the text when using "brackets" (such as various forms of brackets), but in order to distinguish the text from comments, the font of comments has been changed. Horizontal printing generally does not need double lines of notes, and the note number is used to indicate the note text.

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