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O
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Operating
System |
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The software
that controls a computer. Operating systems include DOS, Windows-95,
UNIX, Solaris and Macintosh. |
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P
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Password |
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A secret code
used by a person to access their computer account, and a form
input element. The PASSWORD attribute works like a text entry
field, except all characters entered are displayed as asterisks
(*). |
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Perl |
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Practical Extraction
and Report Language. A popular language for programming CGI
applications. Perl is by far the most popular language for CGI,
because, among other things, it has powerful string matching.
Perl is an interpreted language optimized for scanning arbitrary
text files, extracting information from those text files, and
printing reports based on that information. |
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Plug-In |
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A file containing data used to alter, enhance,
or extend the operation of a parent application program. One
of the first uses of this term was in Silicon Beach's SuperPaint
application (late 1980s?) for the Macintosh. It had a Plug-ins
folder containing different tools and effects.
The Netscape Navigator Worldwide Web browser
supports plug-ins which display or interpret a particular
file format or protocol such as Shockwave, RealAudio, Adobe
PDF, Corel CMX (vector graphics). The file to be displayed
is included in a web page using an HTML tag.
Plug-ins, both commercially and independantly
authored, can usually be downloaded for free and are stored
locally. Plug-ins come in different versions specific to particular
operating systems (Microsoft Windows 3.1, 3.2, and Macintosh
are available). |
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PNG |
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Portable Network
Graphics. A new, extensible file format for the lossless, portable,
well-compressed storage of raster images. PNG provides a patent-free
replacement for the GIF format and can also replace many common
uses of TIFF format. Indexed-color, grayscale, and truecolor
images are supported, plus an optional alpha channel. Sample
depths range from 1 to 16 bits. PNG is designed to work well
in online viewing applications, such as the World Wide Web,
and so it is fully streamable with a progressive display option.
PNG is robust, providing both full file integrity checking and
simple detection of common transmission errors. Also, PNG can
store gamma and chromatic data for improved color matching on
heterogenous platforms. |
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POST |
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An HTTP request
method. This method transmits all form input information immediately
after the requested URL. Your CGI program will receive the encoded
form input on. |
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Promotion |
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The process of
informing the world of the presence of a web site. The World
Wide Web is exploding as a communications medium. Not only is
the technology growing and changing, but the number of people
involved in using and publishing on the web is expanding. As
the Web expands it is critical that your Web site stands out.
Your Web site must be easily found and it must be linked in
high-traffic locations. Considering the Web's continuous growth,
new directories, search resources, and other listing sites are
being added daily. It is important that this growth be addressed
by your online promotional plan. |
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Protocol |
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The standards
and conventions agreed upon that allow heterogeneous systems
to communicate with each other. |
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Proxy Server |
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A
computer that processes requests by verifying source host information,
destination host address, and information about the requested
service. If the communication checks out against defined security
policy, the request is allowed to pass through to the real Web
server. |
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