The description below is from the book DOS the
Easy Way by Everett Murdock Ph.D.
for information about downloading the book.
Type: Internal (6.0 and later)
Purpose: Used in the CONFIG.SYS file to allow you to use the
from one CONFIG.SYS block within another.
The INCLUDE command is very useful if you find you are repeating the same
commands within your CONFIG.SYS file. You can put a group of
commands in one configuration block within the CONFIG.SYS file and then
back to that configuration block from other configuration blocks by using
INCLUDE=blockname command. A configuration block begins with a name,
in square brackets, followed by a list of configuration commands to be
associated with that block name.
For more information about the INCLUDE command, see Chapter 6, Tips for Advanced Users, in the downloadable book DOS the Easy Way.
blockname - Specifies the name of the configuration block to be
the active configuration block. The INCLUDE command can only be used
configuration block in your CONFIG.SYS file.
To add one block of configuration commands (NORMAL) within another
use the INCLUDE command to name the second block as in the following