If your documents are anything like the ones I’ve worked on over the years, there’s at least one section (the “Respectfully submitted” or the Certificate of Service in pleadings or the notary acknowledgement, for example) that has this in it:
Dated this the 15th day of August, 2012
If you start drafting the document on the 15th but don’t actually file (or sign or whatever) until, say, the 21st or the 30th or, heaven forbid, sometime next month or year, you’re either going to have to leave blanks for the day, month and/or year while you’re drafting or remember to update all those dates when you finalize the document.
But what if you didn’t have to do either one? What if your document was smart enough to do its own updating, based on the date you saved it last?