The Photo Frame Mouse Mat lets you customise your workspace with whatever keeps you smiling or on track – family snaps, notes, reminders, you name it. Slide them in under the clear textured window and switch them out whenever the mood strikes. Multiple sizes and window options are available. Price includes one design only. Poly bagging adds $0.50 per unit. Variable-data printing (VDP) (Also known as variable-information printing (VIP) or VI) is a form of digital printing, including on-demand printing, in which elements such as text, graphics and images may be changed from one printed piece to the next, without stopping or slowing down the printing process and using information from a database or external file. For example, a set of labels with the same basic layout can be printed with a different name on each label. Variable data printing is mainly used for direct marketing, customer relationship management, advertising, invoicing, and applying addressing on self-mailers, brochures, or postcard campaigns.