Return a string with a single character, which has the number value {expr}. Examples: nr2char(64) returns "@" nr2char(32) returns " " When {utf8} is omitted or zero, the current 'encoding' is used. Example for "utf-8": nr2char(300) returns I with bow character With {utf8} set to 1, always return utf-8 characters. Note that a NUL character in the file is specified with nr2char(10), because NULs are represented with newline characters. nr2char(0) is a real NUL and terminates the string, thus results in an empty string. To turn a list of character numbers into a string: let list = [65, 66, 67] let str = join(map(list, {_, val -> nr2char(val)}), '') Result: "ABC" Can also be used as a |method|: GetNumber()->nr2char()