] To use the "Wiki It!" bookmarklet, simply highlight the
] word or words you wish to look up, and click the
] bookmarklet. A separate, minimalist window will open with
] the Wikipedia entry for it.

] Just drag the Wiki It! link onto your personal toolbar.
] It has been tested on Mozilla 1.5 on Linux and Windows
] systems, as well as Firefox 0.7, and Internet Explorer 6.
]

Most Significant Bit :: Wikipedia Bookmarklet