| features added to a product; special parts or functions; extras. |

| bells and whistles pl.n. Nonessential features or enhancements intended especially to add commercial appeal. |
bells and whistles
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bells and whistles
bells and whistles jargon
(By analogy with the "toyboxes" on theatre organs). Features added to a program or system to make it more flavourful from a hacker's point of view, without necessarily adding to its utility for its primary function. Distinguished from chrome, which is intended to attract users. "Now that we've got the basic program working, let's go back and add some bells and whistles." No one seems to know what distinguishes a bell from a whistle.
[The Jargon File]
(2007-04-03)