uof It is a document file format developed in China by Chinese office of software work group (COSWG). It is an open standard for office applications sometimes known as unified office format. It includes presentation, words processing and spreadsheets. Although there are specific applications for each which are widely and commonly used compared to UOF, for text documents(UOT), Presentation(UOP), and spreadsheets(UOS).
ras A .ras extension file is a binary raster image format file that was developed using the UNIX platform by Sun Microsystems. It uses the bitmap format that is simple to use and has the ability to store data in grayscale, black and white as well as colored pixels. The basic layout of a .ras file begins with a header, is followed by a color map and finally by the image data that is bitmapped.