U+2420 "␠" Symbol for Space Unicode Character

U+2420 "␠" Symbol for Space is a graphic representation of a blank space, designed primarily for use in technical contexts such as data processing, programming, or plain text display, where it serves as a visible marker to indicate the presence of a space character that would otherwise be invisible. Originally included in Unicode for compatibility with legacy character sets like ASCII's control pictures, this symbol resembles a small, open rectangle or a stylized underscore and is often employed in documentation, code examples, or debugging output to make whitespace explicitly recognizable.