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Glossary 301
W3C
World Wide Web Consortium. Creates specifications, guidelines, software, and tools
to achieve its vision for the Web—that all users would equally experience the Web
regardless of their browsers, operating systems, or physical disabilities; and that the
Web would be a free flow of information, commerce, and communication.
watch
Expression or variable that you are monitoring, so that you can see its value at given
points while the debugger steps through your code.
WDDX
Web Distributed Data Exchange, an open source tag-based language. For details, visit
their Web site at www.OpenWDDX.org.
Web server
See server.
XHTML
Extensible Hypertext Markup Language. Reformulation of HTML as an XML
application. It is almost identical to HTML 4.01, but more strict and clean. It is
designed to replace HTML, and it works on most existing HTML browsers. For more
information, see the W3C HyperText Markup Language Home Page at www.w3.org/
MarkUp/.
XML
Extensible Markup Language. Defines the structure of information, or how the
information could be stored in a database. For example, an XML language for
cooking could have a
<recipe>
tag, and
<recipe>
could contain tags for
<header>
,
<ingredients> , and <instructions> . The power of XML lies in the fact that the
information can be stored and retrieved from a database, rendered in a variety of
formats, and used for a variety of purposes—for example on a Web page, hand-held
computer, or cell phone; or for a cookbook, recipe card club, or book about cilantro.