Files that contain the .docm file extension are used by the Microsoft Word word processing application. The DOCM files that are used by this program are macro-enabled document files that have been created in the 2007 and 2010 versions of the Microsoft Word word processing software program.
DOCM files are similar to DOCX files, but they contain macros and VBA scripting. Like DOCX files, DOCM files use a combination of XML architecture and ZIP file compression. This compression allows the files to be stored in a smaller size, freeing up space on a user's hard drive and making it easier to distribute the files online.
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