REM

REM signifies a comment or REMARK

In a batch file adding REM at the start of a line will prevent most commands from executing. REM can also be used to add comments to the config.nt file.

In a batch file adding :: at the start of a line will prevent any commands (on that line) from executing

For example:

@ECHO OFF
::
:: My Batch File
::
:: Date Created
:: Usage information
DIR

Equivalent Linux BASH commands:

### - Comment / Remark