versioned

That's why you should have a "versioned" backup, such as via

Macworld 2010

To ensure that your assembly was indeed "versioned":

MSDN Blogs 2008

Time Machine is like a versioned file system, potentially allowing you to look back at previous states of a file.

Automatically Save Your Work on Your Mac On Any Application « Drawn! The Illustration and Cartooning Blog 2009

My take is that the “new population of advertisers who never could afford newspapers because they were too big and inefficient” will mostly move to versioned newsPapers delivered in Print.

Guardian column: The LA Times’ day arrives « BuzzMachine 2009

Describe your model a bit deeper, please – especially what you mean by “versioned print” and “contextualized reporting.”

L.A. Times should shut off its presses, Politico should network, and other advice from Jeff Jarvis » Nieman Journalism Lab 2009

Given the most recent advances in web offset printing re versioning etc, that means that versioned editions can be placed in physical neighborhoods.

NewspaperProject: a wobbly kickoff » Nieman Journalism Lab 2009

Following Windows 3.0 was Windows NT which was code versioned as Windows 3.1.

Perhaps Microsoft Could Hire Count von Count | Live Granades 2009

Once the focus on the “interests of prospective readers” is changed, versioned Print + web + delivery trucks can pretty much deliver the same customer experience you describe.

NewspaperProject: a wobbly kickoff » Nieman Journalism Lab 2009

Then came Windows 95, which was code versioned as Windows 4.0.

Perhaps Microsoft Could Hire Count von Count | Live Granades 2009

The daily tab could be printed in versioned editions, different neighborhoods getting different news in briefs.

Hearst, MediaNews: You can invent the future in San Francisco » Nieman Journalism Lab 2009