IBM WD1003-WA2 User Manual page 24

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memory).
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Follows will show you how to construct a special type of file,
called a BATCH FILE. A batch file is a program made up of
DOS commands. hen it is executed, the commands are pro ­
cessed by the command processor, one after another, as if
they were entered from the keyboard. This is handy when
you have a long series of commands to enter repeatedly. By
convention, batch files are given the extension " BAT " .
hen you want to execute programe, all you have to do is
enter
the
filename of the load module for that program. For
example, to execute the program stored in the file FARKLE
FXE. enter "FARKLE " .
Besides internal and external DOS commands, you can in ­
struct DOS to execute two kinds of programe.
\ Load moudle is a programe written in a computer language
ihat is ready to be executed. By convention, a file that con-
tarns a load module, is given the extension " EXE " .
For each external command, there is one file, called a COM­
MAND FILE, that contains the programe to interpret that
command. Command file have the extension " COM " , for
example, the FORMAT command is interpreted by a pro ­
grame that is stored in a file called Format.com .
hen you enter an internal command, the command pro ­
cessor interprets it directly. hen you enter an external
command, the command processor executes the programe in
the corresponding command file.