"Control + Z" is a keyboard shortcut commonly used in computer applications to undo the last action performed. This function is helpful when users make mistakes, allowing them to quickly revert changes without manually correcting them. It is widely supported across various software, including word processors, graphic design programs, and coding environments. When using Windows or Linux operating systems, pressing "Control + Z" will typically reverse the most recent command. On Mac systems, the equivalent shortcut is "Command + Z." This feature enhances productivity by enabling users to experiment freely, knowing they can easily backtrack if needed.