Brother GTX pro Instruction Manual page 85

Open a new file
(1) Set up a new document as follows:
 [Width]: 14.0 in. (355.6 mm)
 [Height]: 16.0 in. (406.4 mm)
 [Orientation]: Portrait
 [Color Mode]: [RGB]
<TIPS>

Set the width and height to the size of platen to be used. (☞5-4-1. For other applications: Selection of platen size >>P.127)
The above size is the standard 14X16 platen size.
85
Creating print data