By further analogy, the term "sandbox" can also be applied in computing and networking to other temporary or indefinite isolation areas, such as security sandboxes and search engine sandboxes (both of which have highly specific meanings), that prevent incoming data from affecting a "live" system (or aspects thereof) unless/until defined requirements or criteria have been met.

The term sandbox is commonly used for the development of Web services to refer to a mirrored production environment for use by external developers.

It’s one of the most quotable and subtly funniest shows on television, intricately plotted without ever becoming overly convoluted and mixing thrilling action with rich character work, and has always been beautifully made.

Though the lightness of touch with which it approaches its stories might suggest otherwise (I’d call it a strength), it’s not just simple entertainment, though it is relentlessly entertaining.

“Justified”’s first season isn’t its strongest, with a slightly uneven first few episodes that are more procedural and case-of-the-week than the series would become.

But few would deny that its pilot episode wasn’t something truly superior, one of the best first outings in the present age of TV drama, and one setting the tone for so much of what would to follow (expect it to be a key touchstone for tonight’s finale).

Like the best crime and Western narratives (“Justified” is both), it uses genre to talk about larger subject matter, be it family, justice, or the increasingly troubled American heartland.

After a final season that could eventually become to be seen as the show’s finest, “Justified” wraps up its run tonight, and to mark the occasion, we’ve picked out ten of the best hours of television it’s produced since debuting in 2010.

With sharp, legitimately funny dialogue that could have been lifted from Leonard’s work directly (the opening scene is one of the series’ best lead-ins) and impeccable direction from “The Last Seduction”’s John Dahl, who was behind many of the top-flight episodes, the show really finds its groove here.

If there were any suspicions that “Justified” had peaked with its first season, they were dispelled almost immediately with the debut of the second, with the introduction of new antagonists the Bennett clan, a ruthless clan of weed-slingers led by the quietly fearsome Mags (a rightly Emmy-winning Margo Martindale), along with her three less competent sons (Jeremy Davies, who also bagged an Emmy, Brad William Henke and Joseph Lyle Taylor).

For hardcore Leonard fans like myself, one of the great pleasures of “Justified” isn’t just seeing writers capture his voice so perfectly and come up with so many new characters that could have come from him.

It’s also the occasional cameos from characters who may have had their names have been changed but are clearly based on seminal figures from other Leonard texts.

Sandboxes replicate at least the minimal functionality needed to accurately test the programs or other code under development (e.g.