user-header

USER-HEADER  -  create your own header field

Usage:  USER-HEADER label text

The USER-HEADER command adds your own custom header field to the outgoing 
  message.  Supply a single word as a label, followed by the text.

You can create more than one user-header field in a message, by repeating
  the USER-HEADER command.  Each use creates a new field, even if you repeat
  a label.  USER-HEADER with no text does nothing.  To remove a user-header
  field, use ERASE USER-HEADER with the label.

To use CCMD completion with USER-HEADER, see help for SET USER-HEADER.

Example:  Send>user-header Phone 555-1234  #Note, no ":" is used.
          Send>display headers	           #Displays the usual fields (From, 
 	   ...	                 	   #To, Cc, Subject) and the 
           Phone: 555-1234	           #user-header field Phone.

For more help, type "help" and one of these topics:
  display   header-field   set header-options-file   set user-header   ccmd