Read the dictionary definition of bracket. All definitions for this word.
1. a support projecting from a wall (as to hold a shelf)
2. either of two punctuation marks ([ or ]) used to enclose textual material
3. either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material
4. a category falling within certain defined limits
5. classify or group
6. place into brackets
1. Please bracket this remark
7. support with brackets
1. bracket bookshelves