And/Or/Comment (position 7)

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.