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:: O ::

Output
Anything that comes out of a computer or system.

Operating System (OS)
The program that allows you to access the basic functions of your computer. It is the minimum software required to run a program. Operating systems include DOS, Windows, UNIX, Solaris, Macintosh, etc.

Online
The term refers to anything that's on the Internet.


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:: P ::

Packet
When you retrieve a document via the internet, the document is sent in "packets" which fit in between other messages on the telecommunications lines, and then are reassembled when they arrive at your end. This occurs using TCP/IP protocol. The packets may be sent via different paths on the networks which carry the Internet. If any of these packets gets delayed, your document cannot be reassembled and displayed. This is called a "packet jam." You can often resolve packet jams by pressing STOP then RELOAD. RELOAD requests a fresh copy of the document, and it is likely to be sent without jamming.

Password
Secret code of letters and numbers needed to gain access to a time-sharing computer or FTP system, or to protect Web pages.

PDF - .pdf or pdf file
Abbreviation for Portable Document Format, a file format developed by Adobe Systems, that is used to capture almost any kind of document with the formatting in the original. Viewing a PDF file requires Acrobat Reader, which is built into most browsers and can be downloaded free from Adobe.

Perl
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.

Personal Page
A web page created by an individual (as opposed to someone creating a page for an institution, business, organization, or other entity).

PHP
PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.

Phrase
More than one KEYWORD, searched exactly as keyed (all terms required to be in documents, in the order keyed). Enclosing keywords in quotations " " forms a phrase in most search engines.

Ping
Packet InterNet Groper is a program and UNIX command that helps testing and debugging network and/or Internet connections. An 'Echo' command is sent to a specified computer and then waits for a response. The result is a report that displays the success or failure, usually a report back of a timed response in seconds, of the intended action.

Plug-In
A file containing data used to alter, enhance, or extend the operation of a parent application program.

Web browsers support 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.

Popularity Ranking of search results
Some search engines rank the order in which search results appear primarily by how many other sites link to each page (a kind of popularity vote based on the assumption that other pages would create a link to the "best" pages). Google and Raging Search are examples of this.

Post
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.

Posting
Can refer to a message or article that appears on a newsgroup or message board system, or the act of sending an electronic message to a newsgroup or message board.

PPP
Abbreviation for Point to Point Protocol. It is a protocol used for sending information via a modem which is connected to the Internet.

Promotion
The process of informing the world of the presence of a web site.

Protocol
The rules make possible the exchange of messages between users on the Internet, or within any given network.

Proxy Server
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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