The media width cannot be selected. Only standard paper sizes can be selected. (P-touch Editor 5.x for Windows) | Brother
P-touch Editor – RoaringApps
PT-P900W Desktop Label Printer with Wi-Fi® | High-Resolution Labels at 360dpi & Up to 3.1ips
Example of Creating Template Files with P-touch Editor| How to Use b-PAC | Application development tool for Windows: b-PAC | Information for Developers | Brother
Example of Creating Template Files with P-touch Editor| How to Use b-PAC | Application development tool for Windows: b-PAC | Information for Developers | Brother