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Executable file
A file containing program instructions, as opposed to data
created with an application program. An executable file has
the extension.BAT, .COM, or .EXE.
Execution speed
The speed at which the central processing unit can execute
commands. Also called operating speed. The Apex can run at
8 MHz or 12 MHz.
Extended memory
Memory above 1MB that is not available to MS-DOS
application programs. Extended memory can be used for the
disk caching program, HDCACHE. See the description of the
HDCACHE in your MS-DOS Reference Manual.
Extended partition
An additional MS-DOS partition; you can create one primary
MS-DOS partition and one extended partition,
Extension
A suffix of up to three characters that can be added to a file
name to better identify it.
External command
An MS-DOS command stored in a program file with the
extension .COM or .EXE. MS-DOS must be able to find the
program file to execute the command. See also Internal
command.
File
A group of related pieces of information called records, or
entries, stored together on a disk. Text files consist of words
and sentences. Program files consist of codes and are used by
computers to interpret and carry out instructions.
Glossary 7