A family of Microsoft word processing software products for creating web, email, and print documents.
Use the AutoCorrect function. Click File > Options > Proofing > AutoCorrect Options > AutoCorrect.
In the Replace box, enter \m. In the With box, enter the replacement text.
Click the Add button.
When you return to the document, the replacement will be triggered if you type \m and then press the SpaceBar, or add punctuation and press the SpaceBar.
Note that AutoCorrect entries are saved by language. You'll see the active language in the title bar of the dialog box.