Franking Privilege
Putting a message into a secret form by changing words or letters, or substituting numbers for letters.
Try substituting the letters in your name with symbols.
Signature
electronic signature device
If he has earned them, why not?
The signature
Congress
He signed his letters to the police as the Son of Sam.
Different types of letters have different parts. Personal letters include: heading, salutation, body, closing, and signature. Business letters include: heading, date, inside address, greeting, subject line, Body, closing, signature and writer's identification, and copies or enclosures.
African National Congress
Date, salutation, body, closing, signature, enclosures
The Library of Congress Classification System (LCC) organizes materials into 21 branches of knowledge. These basic categories (labeled A - Z, with the exceptions of I, O, W, X and Y) are then divided into more specific subclasses by incorporating additional letters.