Vector image saved in the native DrawPlus drawing format; supports CMYK color, 3D shapes, filter effects, text in a shape, and image feathering; DPP documents created with DrawPlus 7 or later may also include multiple pages.
Program(s) that open dpp files
Windows: Serif DrawPlus
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/dpp
