Wasn't sure where to put this question. Anyway. Some of my customers return the whole invoice with thier payment. This leaves them nothing to keep for thier records. I'd like to have a section at the bottom of the invoice that they could tear off that says "Return This Portion With Your Payment". I thought someone here said they bought an office product that perforates a piece of paper, but I heve never seen one. Any ideas? What do you guys/gals do? Thanks in advance.