GOTO

Directs MS-DOS to a line in a batch program that is marked by a 
label you specify. You can use this command only in batch 
programs.

Note:
Usually, there are two ways of using GOTO command:
1. Unconditioned GOTO. Format:

GOTO label

This is used when there is a definite destination. Also, you can 
use this format to goto a label specified by an environment 
variable:

GOTO %env%

In AUTOEXEC.BAT, if multiple configuration in CONFIG.SYS is 
applied, you can use the command "GOTO %config%" to go to the 
corresponding label of the multiple configuration. For example:

---- CONFIG.SYS -----

[MENU]
MENUITEM=MENU1, Direct startup
MENUITEM=MENU2, Start with CD-ROM support
[MENU1]
[MENU2]
DEVICE=C:\DRIVERS\CDROM\IDE.SYS /D:MSCD000

---- END OF FILE ----

--- AUTOEXEC.BAT ----

@ECHO OFF
PATH C:\DOS
GOTO %CONFIG%
:MENU1
GOTO END
:MENU2
MSCDEX.EXE /D:MSCD000
GOTO END
:END

---- END OF FILE ----

The example above shows using multiple configuration to boot 
with two different configurations.

2. IF ... GOTO Format.
The format is:

IF condition GOTO label

This is used when there is need to do a check of a certain 
condition.

For more information, please refer to MS-DOS Help or Windows NT 
command line command help.