#### 3.5.4.9 Signing the Message: ~a and ~A ¶

To save you the effort of typing your signature at the end of each message, you can use ‘`~a`’ or ‘`~A`’ escapes. If your signature occupies one line only, save it to the variable `sign` and use ‘`~a`’ escape to insert it. Otherwise, if it is longer than one line, save it to a file, store the name of this file in the variable `Sign`, and use ‘`~A`’ escape to insert it into the message.