A signature usually comprises three or four lines at the bottom of an e-mail message. Most often it contains a name and e-mail address. Your signature file should be informative and pleasant to view. You should be brief and adhere to generally accepted line and character limits. Most e-mail programs accept 80 characters per line.
Some programs recognize a signature by signature dashes, which form the first line of a signature.
It is a courtesy to preface your signature with signature dashes. Type your signature file as you would like it to appear in all of the e-mail messages you send in either pine or elm. You now have a signature file in your home directory. To configure elm to attach your signature file to all of your outgoing mail, you must type the signature filename in two spots.