Use this field to specify comments or conditions.
Comments
An asterisk (*) is used to identify this line as a comment. Comment lines can appear anywhere in DDS and are for documentation purposes. They have no effect on the described device file. A blank line (no characters specified) is also treated as a comment.
AND
The letter 'A' is used to identify this line as an ANDed condition.
OR
The letter 'O' is used to specify that several conditions are to be ORed together.
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