1. The ".docm" file format was introduced with Microsoft Word 2007 and is used to save documents that contain macros or have macros enabled.2. In contrast to the ".docx" format, which is also a Word 2007 introduction and used for saving regular documents without macros.3. The ".dotx" format, introduced by Word 2007, is designated for template files that do not include macros.4. Correspondingly, the ".dotm" format, also a Word 2007 template file format, is used for saving template files that contain macros or have macros enabled.