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E-journal (Electronic journal) - A full-text electronic publication, which may include image file, intended to be published indefinitely in machine-readable form, delivered electronically to the user directly over the telecommunications network. Sometimes distributed in other electronic formats. (ARL Spec Kit 201: Electronic Journals: Policies & Procedures, p.45)

E-mail - The transmission of messages over communications networks. The messages can be notes entered from the keyboard or electronic files stored on disk. Most mainframes, minicomputers, and computer networks have an e-mail system. Some electronic-mail systems are confined to a single computer system or network, but others have gateways to other computer systems, enabling users to send electronic mail anywhere in the world. Companies that are fully computerized make extensive use of e-mail because it is fast, flexible, and reliable. (Webopedia: http://www.webopedia.com/TERM/e/e_mail.html)

E-mail attachment - See Attachment.

EAD (Encoded Archival Description) - A standard for encoding archival finding aids using the Standard Generalized Markup Language (SGML). See also SGML. (Encoded Archival Description Official Web Site: http://www.loc.gov/ead)

EBCDIC (Extended Binary Coded Decimal Interchange Code) – Pronounced eb-sih-dik, EBCDIC is an IBM code for representing characters as numbers. Although it is widely used on large IBM computers, most other computers, including PCs and macintoshes, use ASCII codes. (Webopedia: http://www.webopedia.com/TERM/E/EBCDIC.html

EDI - Short for Electronic Data Interchange, the transfer of data between different companies using networks, such as the Internet. As more and more companies get connected to the Internet, EDI is becoming increasingly important as an easy mechanism for companies to buy, sell, and trade information. ANSI has approved a set of EDI standards known as the X12 standards. (Webopedia: http://www.webopedia.com/TERM/E/EDI.html)

Edifact - A set of internationally agreed standards, directories and guidelines for the electronic interchange of structured data, and in particular, for interchanges related to trade in goods and services, between independent computerized information systems.

EDItEUR - The European group that coordinates the development, promotion and implementation of EDI in the books and serials sectors. (EDItEUR: http://www.editeur.org)

Edition - 1. All copies of a bibliographic item produced from substantially the same type image. 2. One of various printings of a newspaper for the same day, an issue published less often, such as a weekly, or a special number. 3. The form in which a work is published, such as original, revised, reprint, textbook, paperbound, library, etc. [ALA Glossary, modified]

EGA (Enhanced Graphics Adapter) - Abbreviation of enhanced graphics adapter, a graphics display system for PCs introduced by IBM in 1984. EGA supports 16 colors from a palette of 64 and provides a resolution of 640 by 350. This is better than CGA but not as good as VGA. EGA is now obsolete. (Webopedia: http://www.webopedia.com/TERM/E/EGA.html)

Electronic Data Interchange - See EDI.

Electronic certificates - A method of limiting access to resources to authorized users. An electronic certificate includes information so that a user could be authorized (e.g. affiliation with a university) against a central database for access to a suite of resources. (Machovec, George, 1997: http://www.coalliance.org/reports/security.htm)

Electronic Data Interchange For Administration, Commerce and Transport – See EDIFACT.

Electronic journal - See E-journal.

Emulation - Refers to the ability of a program or device to imitate another program or device. Many printers, for example, are designed to emulate Hewlett-Packard LaserJet printers because so much software is written for HP printers. By emulating an HP printer, a printer can work with any software written for a real HP printer. Emulation tricks the software into believing that a device is really some other device. (Webopedia: http://www.webopedia.com/TERM/e/emulation.html)

Encoded Archival Description - See EAD.

End user - The final or ultimate user of a computer system. The end user is the individual who uses the product after it has been fully developed and marketed. The term is useful because it distinguishes two classes of users, users who require a bug -free and finished product (end users), and users who may use the same product for development purposes. The term end user usually implies an individual with a relatively low level of computer expertise. Unless you are a programmer or engineer, you are almost certainly an end user. (Webopedia: http://www.webopedia.com/TERM/e/end_user.html)

Enhanced Graphics Adapter - See EGA.

Entry - A record of an item in a catalog. [AACR2, rev] See also Access point, Heading, Tracings.

Estimated pricing - A billing plan whereby a vendor preassigns an estimated price to a customer's renewal and/or new title invoice and subsequently (once a year) debits or credits the customer's account to reconcile it with the actual price charged.

Exchange - An arrangement whereby libraries exchange their own publications, the publications of their parent institutions, or duplicates from their collections. The term may also refer to a publication traded in such an arrangement.

Expiration date - The date upon which a periodical subscription expires.

Extension of subscription - A common practice of publishers to compensate for delayed issues or issues not supplied. The publisher lengthens the current subscription period rather than offering credit or replacement for unsupplied issues.

Extranet - An intranet that is partially accessible to authorized outsiders. Whereas an intranet resides behind a firewall and is accessible only to people who are members of the same company or organization, an extranet provides various levels of accessibility to outsiders. See also Firewall and Intranet.

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