I've studied the official user guide for EPSON TM-T20 Utility and the only place I've found length is next to the logo printing. I couldn't find anything else about this procedure or your terms in the question above. I recommend checking the user guide by yourself to see exactly how the software works and how can it be used for your needs. The guide is in the PDF format and you will need a PDF reader to access it. The download is from the official website where the software is available too.
I've studied the official user guide for EPSON TM-T20 Utility and the only place I've found length is next to the logo printing. I couldn't find anything else about this procedure or your terms in the question above. I recommend checking the user guide by yourself to see exactly how the software works and how can it be used for your needs. The guide is in the PDF format and you will need a PDF reader to access it. The download is from the official website where the software is available too.