This format is used for storing photos taken with Swedish Hasselblad cameras. It has a RAW image file structure. It is saved without applying automatic corrections. Photographers can edit the 3FR photos by changing the white balance, color correction, and other parameters without sacrificing image quality.
DOT is a template file created by Microsoft Word, a word processing application. The DOT file provides a solution for situations where many similar documents with the same font and layout are required with simple changes between them needed, like names and places for example