This is a format used for storing clipart images for working with CorelDRAW vector imaging. It’s used for entering separate, prepared graphical elements into a vector graphics design. It’s used as a blank template and is distributed in the form of millions of prepared cliparts which can compliment your own design.
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