The smallest type size that is permitted based on the space available for labeling on the PDP. If the area of the PDP is 5 sq. in. (32 sq. cm) or less, the minimum type size is 1/16-in. (1.6 mm); if more than 5 sq. in. but not more than 25 sq. in. (161 sq. cm), the minimum type size is 1/8-in (3.2 mm); if more than 25 sq. in. but not more than 100 sq. in. (645 sq. cm), the minimum type size is 3/16-in. (4.8 mm); if more than 100 sq. in. but not more than 400 sq. in. (2,580 sq. cm), the minimum type size is 1/4-in. (6.4 mm); and if more than 400 sq. in., the minimum type size is 1/2-in. (12.7 mm).