DOTM file has two attributes namely Zip file compression and XML (Extensive Markup Language). It is identical to .DOCX and .DOCM file in which the M stands for macro and the X stands for XML. The application that can open both .DOCX and .DOCM is via Microsoft Word version 2007 or 2010.
Free, fast +
You can use it on electronic devices such as computers, tablets, and mobile phones.