This material has been prepared to accompany the
book "Learning to Use the Internet and the World Wide Web"
(ISBN 1-887902-78-3) by Ernest Ackermann
and Karen Hartman, and
published by Franklin, Beedle and Associates,
Incorporated, Wilsonville, OR. © 2002. No part of this may be reproduced,
stored in a retrieval system, or transcribed without permission of the
A response code or error transmitted by a Web server to a client when a requested Web page or file is not present on the server.
The address to use to join an email discussion group or interest group and to send requests for services.
A description of a hyperlink or image, put in by the author of a Web page, that pops up when you move the mouse pointer over the hyperlink or image.
A means of using FTP to make files readily available to the public. When you start an FTP session with a remote host, you give the login or user name "anonymous" and enter your email address as the password. When you use a URL that starts with ftp:// and a domain name with a Web browser, an anonymous FTP session begins, and you don't have to enter a user name or password.
A message or file that is part of a Usenet newsgroup.
ASCII (American Standard Code for Information Interchange)
A code for representing characters in a numeric form. An ASCII file is one that contains characters that can be displayed on a screen or printed without formatting or using another program.
Communication where the sender and receiver don't participate at the same time, for example, email or voicemail.
A file that is sent as part of an email message but that is not in the body of the message. Images, programs, and word-processing files are usually sent as attachments, because most email programs allow only plain text in the body of the message.
A file containing information such as a compressed archive, an image, a program, a spreadsheet, or a word-processing document. The items in the file usually cannot be displayed on a screen or printed without using some program.
An encoding scheme that converts binary data into ASCII (American Standard Code for Information Interchange) characters.
A list of links to items on the World Wide Web. Bookmark lists are usually created by individuals as they use Netscape. A good way to keep track of favorite or important sites, since they are saved and can be used at any time. See also favorites list.
The ability of a search tool to distinguish between uppercase and lowercase letters. Some search tools aren't case sensitive; no matter what you type, the tool picks up only lowercase matches. Search engines that are case sensitive strictly follow a search request; they'll return documents containing the words in the case in which they were entered in the search expression.
CGI (Common Gateway Interface)
A specification for transferring information between programs that execute on a Web server and the server software itself. A typical situation is for a so-called CGI program to take input from the server software, process it, and write the output in the form of a Web page that is then passed to a client by the server.
A conference or forum that allows two or more people to converse with each other at the same time by taking turns typing messages.
A program or Internet service that sends commands to and receives information from a corresponding program, often at a remote site, called a server. Most Internet services run as client/server programs. Telnet, for example, works this way. A user starts a client program on his computer that contacts a Telnet server.
A database that requires you to pay a subscription cost before accessing it. It is also referred to as a proprietary database.
Communications Decency Act of 1996
Legislation approved by Congress that made it a criminal offense to include potentially indecent or offensive material on the Internet. The U.S. Supreme Court ruled in June of 1997 that this act abridged the freedom of speech that is protected by the First Amendment, and the act was ruled unconstitutional.
A feature enabling a search engine to find synonyms in its database. When you type in a word or phrase, the engine automatically searches for the word or phrase you want, plus words or phrases that may mean the same thing. For example, if the word teenage is in your search expression, the search engine also looks for the word adolescent.
The part of a Web browser window that contains the current Web page; it contains images, text, or hyperlinks.
A relatively small piece of information that is initially placed on a client’s computer by a Web server. Once a cookie is present, the same Web server may read or rewrite the cookie. A Web server requests or writes a cookie to your computer only if you access a Web page that contains the commands to do that. Cookies are used to store information such as your login name and password or information about what portions of a Web site were visited on your computer. Sometimes viewed as an invasion of privacy, cookies are useful to you in some cases. Cookies can be used to keep track of your password or keep track of some preferences you’ve set for every visit to that site. You can set preferences in your browser to accept or reject cookies.
The right to copy or duplicate material such as images, music, and written works. Only the owners of the information can grant this right. Regardless of whether information on the Internet or a Web page is accompanied by a statement asserting copyright, it is still protected by the copyright laws of the United States, the Universal Copyright Convention, and the Berne Union.
Posting an article to more than one Usenet newsgroup.
Describes a file recreated in binary format that has been encoded or translated from binary to ASCII or text format. Binary files that are sent as attachments to email have to be encoded (translated from binary to ASCII) before they are sent and decoded (translated from ASCII to binary) when they are received before they can be used.
The configuration a search engine uses unless you override the setting by specifying another configuration. For example, in some search engines, the Boolean operator OR is the assumed relationship between two words unless you type AND between the words.
A topical list of Internet resources, arranged hierarchically. Directories are meant to be browsed, but they can also be searched. Directories differ from search engines in one major way - the human element involved in collecting and updating the information.
A group that discusses a single topic via email messages. An individual subscribes to or joins a discussion group electronically, and all messages sent to the group are distributed to the members by email.
See Internet domain name.
domain name system
A system of computers and protocols on the Internet through which an Internet domain name is translated into an IP address.
To transfer or copy a file from another computer (the remote computer) to the computer you're using (the local computer). This term is often applied to the process of retrieving a file from a software library or FTP archive.
ECPA (Electronic Communications Privacy Act)
The U.S. law that prevents U.S. investigative agencies from intercepting or reading email messages without first obtaining a warrant.
electronic mail (email)
A basic Internet service that allows users to exchange messages electronically.
The program you use to work with your email. Also called the mail user agent.
email discussion group
See discussion group.
A symbol that can be typed using one or more characters to foster more expressive and efficient communication. For example, :-) and :) are used to represent a grin or smile. These are also used to denote that a sentence is to be interpreted as a joke.
Describes a file that's been translated from binary format to ASCII (American Standard Code for Information Interchange). This is done so the file can be sent using email.
A procedure to convert a file or message from its original form to one that can only be read by the intended recipient.
A provision in most copyright conventions or statutes that makes it possible for individuals to copy portions of a document or other piece of work for short-term use.
The receiving by an individual in a group of all the messages to the group. One person asks a question and replies can come from anywhere in the world.
The sending of one message to a group and having it automatically distributed or made available to every member of the group.
FAQ (frequently asked questions)
A list, often associated with Usenet newsgroups, of commonly asked questions and answers on a specific topic. This is usually the first place users should look to find answers to questions or to get information on a topic.
The name that Internet Explorer gives to an individual's collection of favorite URLs. The browser includes menu bar and toolbar links to the favorites list. This list is similar to the bookmark list kept by Netscape. See also bookmark list.
Part of a Web page or bibliographic record that is designated for a particular kind of data or text.
A strategy in which you limit a search to a particular field. In a search engine, you might search only the URL field. By narrowing the scope of searchable items, field searching helps to eliminate the chance of retrieving irrelevant information.
Software that filters out certain Web sites from the results of a search.
An email message or article in a Usenet newsgroup that's meant to insult someone or provoke controversy. This term is also applied to messages which contain strong criticism of or disagreement with a previous message or article.
An article posted in response to another article. The follow-up has the same subject as the original article.
Some Web pages are divided into rectangular regions called frames. Each frame has its own scroll bar, and in fact, each frame represents an individual Web page.
Computer programs that have been made available to the public free of charge.
frequently asked questions (FAQ)
FTP (File Transfer Protocol )
A means of transferring or sharing files across the Internet from one computer system to another.
A collection of files available through anonymous FTP.
A search engine feature in which every word, significant or insignificant, is indexed and retrievable through a search. See also stop word.
The address to use to send email to each member of a discussion group, interest group, listserv list, or mailing list.
A list of subjects in a directory. The subjects are organized in successive ranks with the broadest listed first and with more specific aspects or subdivisions listed below.
high precision/high recall
A phenomenon that occurs during a search when you retrieve all the relevant documents in the database and retrieve no unwanted ones.
high precision/low recall
A phenomenon that occurs when a search yields a small set of hits. Although each one may be very relevant to the search topic, some relevant documents are missed.
The first screen or page of a site accessible through a Web browser.
HTML (Hypertext Markup Language)
The format used for writing documents to be viewed with a Web browser. Items in the document can be text; images; sounds; or links to other HTML documents, sites, services, and resources on the Web.
HTTP (Hypertext Transfer Protocol)
The standard protocol that World Wide Web servers and clients use to communicate.
A word, phrase, image, or region of an image that is often highlighted or colored differently and that can be selected as part of a Web page. Each hyperlink represents another Web page; a location in the current Web page; an image, audio, video, or multimedia file; or some other resource on the World Wide Web. When the hyperlink is selected, it activates the resource that it represents.
An extension to hypertext that includes graphics and audio.
A way of viewing or working with a document in text format that allows you to follow cross-references to other Web resources. By clicking on an embedded hyperlink, the user can choose her own path through the hypertext material.
IMAP (Internet Message Address Protocol)
A protocol used to retrieve email from a mail server. It is similar to POP3 but has additional features.
implied Boolean operator
The characters + and -, which can be used to require or prohibit a word or phrase as part of a search expression. The + acts somewhat like AND, and the - acts as NOT would in a Boolean expression. For example, the Boolean expression rivers AND lakes NOT swamps may be expressed as +rivers +lakes -swamps.
A group that discusses and shares information about a single topic via email.
The collection of networks throughout the world that agree to communicate using specific telecommunication protocols, the most basic being Internet Protocol (IP) and Transmission Control Protocol (TCP), and the services supplied by those networks.
Internet domain name
The Internet name for a network or computer system. The name consists of a sequence of characters separated by periods, such as www.mwc.edu. The domain name is often the first part of the URL that follows ://. For example, the domain name in the URL http://www.ckp.edu/technical/reference/swftp.html is www.ckp.edu.
IP (Internet Protocol)
The basic protocol used for the Internet. Information is put
into a single packet, containing the addresses of the sender and the recipient,
and then sent out. The receiving system removes the information from the packet.
An Internet address in numeric form. It consists of four numerals, each in the range of 0 through 255, separated by periods. An example is 18.104.22.168. Each computer connected to the Internet has an IP address assigned to it. The IP address is sometimes used for authentication.
IRC (Internet Relay Chat)
A synchronous communication system on the Internet. An individual uses an IRC client to contact one of the several IRC servers on the Internet. Once connected, the individual joins a channel or chat room and can communicate in realtime with others using the channel.
ISP (Internet service provider)
A usually commercial service that provides access to the Internet. Fees often depend on the amount of time and the maximum possible speed, in bits per second, of access to the Internet.
A programming language that was originally designed to be used to develop applications in networked devices. It has been used very successfully to make small applications available through Web pages in a platform-independent format as bytecodes.
A descriptive or significant word in a Web document.
limiting by date
A search tool feature that allows you to limit search results to pages that were indexed after, before, or between certain dates.
See group address.
The type of software used to manage a listserv list.
low precision/high recall
A phenomenon that occurs during a search when you retrieve a large set of results, including many irrelevant documents.
Reading the email or articles in a discussion group or newsgroup without contributing or posting messages.
mail user agent
See email client.
See discussion group.
The sequence of pulldown menus located across the top of the Web browser window. All commands are accessible from the menu bar.
A tool that provides either the ability to search more than one search engine or directory simultaneously or a list of search tools that can be accessed from its site. These two major types of meta-search tools are called parallel search tools and all-in-one search tools.
A keyword inserted in the meta-tag portion of an HTML source document by the Web page author. If Web pages don't have much text, meta-tags help them come up in a keyword search.
MIME (multipurpose Internet mail extensions)
Extensions to standard email programs making it easy to send, receive, and include nontext files.
Similar to a MUD, but the enabling software is written in an object-oriented manner. This allows persons unfamiliar with the intricacies of the software to be able to set up and manage a MOO.
Multiuser dimension or multiuser dungeon. Software that enables synchronous communication in a virtual world. It was originally designed to represent dungeons-and-dragons-type role-playing games.
natural language searching
The capability of entering a search expression in the form of a question or statement.
nested Boolean logic
The use of parentheses in Boolean search expressions. For example, the nested expression ( (rivers OR lakes) AND canoeing) NOT camping will find resources that contain first either the words rivers or lakes and then the term canoeing, but not resources that contain the term camping.
A computer that is used to hold the collections of articles that make up newsgroups, and to run the programs that pass any new articles posted to its newsgroups on to any other server that carries the same newsgroups.
A collection of Usenet articles arranged by topic. Some are specialized or technical groups (such as comp.protocols.tcp-ip.domains - topics related to Internet domain style names), some deal with recreational activities (such as rec.outdoors.fishing.saltwater - topics related to saltwater fishing), and one, news.newusers.questions, is dedicated to questions from new Usenet users.
The software you use to read, reply to, and manage Usenet news.
A message delivery system in which information is broken into small units (packets) and routed through a computer network using the most efficient route available for each. The packets may travel along different paths, but are reassembled into one message by the receiving computer.
Pretty Good Privacy, the name given to a public key encryption system for exchanging email in a secure, encrypted format. PGP was developed by Philip R. Zimmerman in 1991.
A search feature supported by most search engines that allows you to search for words that usually appear next to each other. It is possibly the most important search feature.
A message sent to an email discussion group or a Usenet newsgroup. Also, to send a message to an email discussion group or Usenet newsgroup.
POP(Post Office Protocol)
The way many email programs retrieve messages from a mail server. Email is delivered on the Internet to the mail server and an email program running on a personal computer retrieves that email through POP.
PPP (Point-to-Point Protocol)
A standard protocol that allows a computer with a modem to communicate using TCP/IP.
See commercial database.
A set of rules for exchanging information between networks or computer systems. The rules specify the format and the content of the information, and the procedures to follow during the exchange.
A search feature that makes it possible to search for words that are near each other in a document.
public key encryption
An encryption method that involves the use of two codes or keys. The two keys, one called the private key and the other called the public key, are assigned to an individual. Using the public key anyone can encrypt a message or file that can only be decrypted or decoded by the use of the corresponding private key.
A resource used to find quick answers to questions. Traditionally thought of as being in the form of books (such as dictionaries, encyclopedias, quotation directories, manuals, guides, atlases, bibliographies, and indexes), a reference source on the World Wide Web closely resembles its print counterpart. A reference book doesn't necessarily contain hyperlinks to other resources, although it will often have hyperlinks within the document itself.
A ranking of items retrieved from a database. The ranking is based on the relevancy score that a search engine has assigned.
results per page
A feature of some search engines that allows you to designate the number of results listed per page. Search engines usually list 10 results per page.
The rectangular area on the right side of a window that allows you to move up or down in an open document. You move by clicking and dragging it or clicking on the arrow at the bottom of the bar.
A collection of programs that gather information from the Web (see also spider), index it, and put it in a database so it can be searched. The search engine takes the keywords or phrases you enter, searches the database for words that match the search expression, and returns the results of the search to you. The results are hyperlinks to sources that have descriptions, titles, or contents matching the search expression.
The keywords and syntax that you enter into a search form. With this expression, you ask a search tool to seek relevant documents in a particular way.
The rectangular pane or oblong box that appears on the home pages of most search tools. In this space, you enter a search expression.
Software that you are allowed to download and try for a specified period free of charge. If you continue to use the program after that time, you are expected to pay a usually modest fee to continue using the product legally.
An optional portion of an email message consisting of information about the sender such as his full name, mailing address, phone number, etc. The signature is stored in a file and automatically included with each message.
The emoticon used to denote a smile, a grin, or a joke. Two common forms of this emoticon are :) and :-).
SMTP (Simple Mail Transfer Protocol)
The Internet standard protocol used to transfer electronic mail from one computer
system to another.
The text file that contains the HTML tags for a Web page. A browser reads the source for a Web page from this file and then, using the HTML tags, displays the Web page.
Unwanted and unsolicited email. The electronic equivalent of paper junk mail.
A self-contained index that is searchable and available on the Web. Items in specialized databases are often not accessible through a keyword search in a search engine.
A computer program that travels the Internet to locate Web documents and FTP resources. It indexes the documents in a database, which is then searched using a search engine (such as AltaVista or Excite). A spider can also be referred to as a robot or wanderer. Each search engine uses a spider to build its database.
The bar or rectangular region at the bottom of the browser window that shows several items of information regarding the transfer of a Web document to the browser. When the mouse is moved over a hyperlink it shows the hyperlink's URL. When a Web page is requested it gives information about contacting and receiving information from a server. During transmission it tells, in terms of a percentage, how much of the document has been transferred and indicates whether transmissions are being carried on in a secure manner.
A word that an indexing program doesn't index. Stop words usually include articles (a, an, and the) and other common words.
A division in a hierarchical subject classification system in a Web directory. You click on the subject category that is likely to contain either the Web pages you want or other subject categories that are more specific.
A collection of URLs on a particular topic. Most easily found listed in virtual libraries, they are also referred to as meta-pages.
To join a discussion group, interest group, listserv list, or mailing list. You use this term when writing commands to join such a group and to list a Usenet newsgroup on your newsreader.
Communication where the participants participate at the same time. Chat is an example of synchronous communication.
A code used in HTML that identifies an element so that a Web browser will know how to display it.
TCP (Transmission Control Protocol)
A protocol used as the basis of most Internet services. It is used in conjunction (actually on top of) the Internet Protocol. It allows for reliable communication oriented to process-to-process communication.
A file containing characters in a plain human-readable format. There are no formatting commands such as underlining or displaying characters in boldface or different fonts. It is also called an ASCII file.
A collection of articles that all deal with a single posting or email message.
A representation of an image in a size that's usually much smaller than its true size. For example, we may represent an image whose size is 100-by-200 pixels as a thumbnail of 25–by-50 pixels.
A sequence of icons or items in the window above the content area of a Web browser. Clicking on an icon or item executes a command or causes an action.
One of several main subjects in the top of a hierarchy in a directory's list of subjects.
In the formulation of a search expression, truncation is used when you want to find all endings of a word. It is done by cutting off the end of the word back to the root, and replacing it with a symbol, usually the asterisk (*). When given such a request, a search engine or database will look for all possible ends of the word, in addition to the root word itself.
To leave, sign off from, or quit a discussion group, interest group, listserv list, or mailing list. You use the term when writing commands to end a relationship with a discussion group or to remove a Usenet newsgroup from the list of those you would regularly read.
Transfer a file from the computer system being used to a remote system.
URL (Uniform Resource Locator)
A way of describing the location of an item (document, service, or resource) on the Internet and also specifying the means by which to access that item.
A system for exchanging messages, called articles, arranged according to specific categories called newsgroups. The articles are passed from one system to another, not as email between individuals.
A collection of individuals who form a bond through electronic communication.
A directory that contains collections of resources that librarians or other information specialists have carefully chosen and organized in a logical way.
A program used to access the Internet services and resources available through the World Wide Web.
Web hosting service
A commercial service (in most cases) that provides a Web server to host a Web site. Fees often depend on the amount of disk space available, monthly traffic measured in bytes, and types of services that are provided.
The information available and displayed by a Web browser as the result of opening a local file or opening a location (URL). The contents and format of the Web page are specified using HTML.
A computer that is running the software and has the Internet connections so that it can satisfy HTTP requests from clients. In other words, it is a properly configured computer system that makes it possible to make Web pages available on the Internet.
white page service
A Web search service that helps locate email or street addresses for individuals. Similar services for businesses and government agencies are called yellow page services.
A character that stands in for another character or group of characters. Most search tools use an asterisk for this function. Although a wildcard is most often used in truncation, it can also be used in the middle of words (for example, wom*n).
World Wide Web
The collection of different services and resources available on the Internet and accessible through a Web browser.
XHTML (extensible Hypertext Markup Language)
A well-defined and well-formed definition or formulation of HTML with rules that are more strict than HTML. It also allows for the possibility of extending HTML to include other tags and meaning we can apply to those tags.
This material has been prepared to accompany the book "Learning to Use the Internet and the World Wide Web" (ISBN 1-887902-78-3) by Ernest Ackermann and Karen Hartman, and published by Franklin, Beedle and Associates, Incorporated, Wilsonville, OR. © 2002. No part of this may be reproduced, stored in a retrieval system, or transcribed without permission of the publisher.