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Glossary

189

• €CSV•••Comma Separated Values/Variables. A computer file format in which individual

data values are separated from each other by commas. Used in Microsoft Excel

[2]

and

database software.

• €DDE•••Dynamic Data Exchange. A data transfer mechanism available within Microsoft

Windows that allows computer programs to directly exchange data. For example,

Weather Display can make its data available to Microsoft Excel

[3]

spreadsheets using

DDE.

• €FTP•••File Transfer Protocol. FTP allows local or remote client and server machines to

share files and data using the TCP transport mechanism. FTP is an interactive protocol

with provisions to Copy (in either direction), Rename, or Delete files on a server machine.

• €HTM•••A file type designator. Most commonly used in Microsoft Windows computers to

indicate that the file contains HTML content.

• €HTML•••HyperText Markup Language. The markup language with which World Wide

Web (WWW) documents are written. It allows you to create hypertext links, fill-in forms,

etc.

• €HTTP•••HyperText Transfer Protocol. The set of messages used between Web browsers

and servers to provide a means to deliver requested documents, i.e. HTML files, to a

user.

• €IMAP•••Internet Message Access Protocol. An application layer Internet protocol used

for accessing email on a remote server from a local client. IMAP and POP3 (Post Office

Protocol version 3) are the two most prevalent Internet standard protocols for email

retrieval. Both are supported by virtually all modern email clients and servers, although

in some cases in addition to vendor-specific, typically proprietary, interfaces. For

example, while proprietary protocols are typically used between Microsoft's Outlook

client and an Exchange server and between IBM's Notes client and a Domino server, all

of these products also support IMAP and POP3 allowing interoperability with other

servers and clients. (From Wikipedia

[4]

)

• €IP - Internet Protocol. Data to be transmitted across a network, i.e. the Internet, is

enclosed in a "datagram" with originating and destination addresses attached. Individual

datagrams are sent via whatever route makes sense at that instant. Successive

datagrams between the same points may take different routes. Datagrams are sent on a

"best effort" basis and are not guaranteed to reach the recipient. The structure of

datagrams is defined by the Internet Protocol specifications.

• €ISP•••Internet service provider. The company you have chosen to give you Internet

access, e.g. AOL

[5]

, Comcast

[6]

, Verizon.net

[7]

, BigPond

[8]

, Wanadoo

[9]

, etc.

• €LAN•••Local Area Network. A network covering a small area, i.e. a building or a group of

buildings within a few hundred meters of each other.

• €METAR•••An acronym derived from the French, and basically meaning "aerodrome

weather". This weather observation coding format is the primary format for weather data

distribution in North America, though it is used at many airports in other regions. The

format is relatively readable and is designed mostly for the aviation sector. METAR

observations are usually taken every hour, although larger airports may produce a report

every 30 minutes. Special reports can also be sent when conditions have changed

significantly since the last report was sent. (Part of this definition is from "Weather

Forecasting Handbook", 5th ed., Tim Vasquez).

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