[dba-Tech] Outlook shorthand

I've noticed that Outlook lets you use a lot of "shorthand" codes instead of entering literal dates. For instance, if you're printing a calendar, you can enter 5mo instead of a literal ending date and Outlook will print 5 calendar months from the specified start date. 

I can't find any reference to these shorthand codes. Sometimes they work, sometimes they don't -- for me, it's guesswork. Does anyone have a reference to a comprehensive list? 

Susan H.