Since 2007, Microsoft began to use a file format docx, which is created by using the Office Open XML. The format is a zip-file containing the text in the form of XML, graphics and other data that can be translated into a sequence of bits using patent-protected binary formats. At first it was assumed that this format will replace the doc, but both formats are still used today.
This is an image format that is used for visualization in the Khoros software suite. It is a kind of VIFF bitmap image. The format consists of color zones. It is used for visualization purposes in software for both commercial and scientific purposes.