U+0004 "EOT" END OF TRANSMISSION Unicode Character

U+0004 "EOT" END OF TRANSMISSION is a control character originally defined for telegraphy and data communication, where it signaled the end of a message or data stream. In modern computing, this character is often used as a delimiter or termination marker, particularly in Unix-like operating systems where it can be entered by pressing Control+D to indicate "end of file" to a terminal or command-line input. Despite its historical role, EOT remains a fundamental part of the ASCII and Unicode standards, serving as a conceptual marker for the conclusion of a transmission or data sequence.