You are prompted for a beginning date from which to report. The program remembers this date and the next time you run RNIS, it prompts for the next day, so you can just hit [ENTER].

Enter the customer numbers to report. The program remembers these too, so if it's always the same ones, you just hit [ENTER] to continue.

RNIS creates a spreadsheet like the one below. The LOCATION field is the first "word" (characters until the first space) of the 2nd line of the SHIP-TO from the invoice.