Brother MFC-3420C - Manual (Page 115)

USING BROTHER PC-FAX SOFTWARE 6 - 3
Sending setup
From the Brother PC-FAX Setup dialog box, click the Sending tab
to display the screen below.
The include header option sends an additional page of information
along with fax or E-mail data which contains user and subject
information.
The user has the choice of two user interfaces: Simple style or
Facsimile style. To change the user interface select the interface
setting you want: Simple style or Facsimile style.