See TS16 supplied by RTI (currently saved in M:appldocstrainingTraining DeptMANUALSTool Supp)
That’s the RTI supplied manual, which states the main use for this tool is to print tags to Avery 8.5×11 sheets, where you want to pick which column/row the tags start printing. Also, you set data fields only to print a limited number of characters, starting at the Xth character.