👻🎛️📄

#invisible character #control code #text manipulation #non-printing character #hidden control

⌨️⚙️🤫

#non-printable #hidden character #invisible character #control code #silent character

⚙️↵🔙→

#control code #enter key #backspace #tab key #keyboard symbol #function key #special character

🚫📄🔢

#non-printable #control code #hidden data #disallowed character #formatting character