Enclosed Alphanumerics
Enclosed Alphanumerics is a Unicode block (a group of symbols in Unicode). It has 160 symbols. Most of the symbols in the block are letters and numbers inside of circles or in parentheses. In the first Unicode plane (Basic Multilingual Plane), the blocks Dingbats and Enclosed CJK Letters and Months have more numbers inside of circles. In the next plane, the block Enclosed Alphanumeric Supplement has symbols of letters inside of more circles, parentheses, and squares.