A DOTM file is a document template made by Microsoft Word, a program for word processing. It comes with the usual layout, settings and macros for a document. DOTM files can be used to make a new DOTM document with macros embedded. DOTM files are much like DOTX files. These were also made by Word. Both can be used to store templates that are used to make many documents with the same basic formatting. DOTM files can also be used to save macros. These are a series of commands that are bound together in just one command to end a task. They save time on repetitive tasks like data entry or computation.