Nor did I even remember that it exists when I posted.
On the other hand, though, wouldn't it be easier to maintain a backup in the same folder as the original than to go the Time Machine route to recover from a "disaster?"
And, of course, there are any number of Mac users besides me who don't use Time Machine.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire