Comment Indicators

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When directly editing the MS-DOS configuration files Autoexec.bat and Config.sys, or their XP/2000 counterparts, Config.nt and Autoexec.nt, the safest way to stop a line of text from being implemented is to "comment it out." In these files, you do this by typing REM at the beginning of a line. This tells the system to ignore that line. The advantage to using these indicators as opposed to simply deleting the line is that it's very easy to reverse if you discover that you erroneously commented out an important line.

For .ini files such as Win.ini and System.ini, comment out lines using a semicolon.

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