Top Curly Bracket

Top Curly Bracket at U+23DE is a horizontal curly brace drawn above the items it groups. It is part of the Miscellaneous Technical block and functions as a mathematical layout symbol rather than ordinary punctuation. Its main use is in displayed mathematics, where it marks an overbrace spanning one or more terms. Writers use it to label or explain a portion of an expression from above, such as placing a note over a sum, a repeated pattern, or a grouped factor in algebra, calculus, combinatorics, and physics derivations. It also appears in technical publishing and educational material when formulas are stored or exchanged as plain text with specialized symbols. In high-quality typesetting, the brace is often stretched or built from larger layout pieces; this character is best understood as the visible top-brace form itself, not as a normal left or right curly bracket used in prose or programming.