Epson LT - 286e - Manual (Page 141)

Expansion slot
A particular kind of connector that can accommodate an
option card. You can use the expansion slot in your Equity
LT-286e, for example, to connect a IBM AT-compatible
option card, such as a LAN card or FAX board.
Extension
A suffix of up to three characters you can add to a filename.
External command
A command MS-DOS stores in a program file. The FORMAT
command, for example, is stored in the file FORMAT.COM.
To perform an external command, MS-DOS must be able to
find the appropriate program file. External commands are
distinguished from internal commands (such as DIR or
ERASE), which are not stored in separate program files.
File
A group of related pieces of information (sometimes called
records or entries) stored together on a disk. Text files consist of
words and sentences. Program files consist of code. Computers
use program files to perform instructions.
Filename
A name of up to eight characters MS-DOS uses to identify a
file.
FL backlighting
The LCD screen panel type. It consists of a double-layered
structure to provide a high-contrast font pattern on a white
background. Brightness originates from two fluorescent tubes.
The display is black on white or white on black.
10 Glossary