87DSM_ADD, /**< This indicates that the specified set of topic names and/or selectors should be added to any existing selection */
88DSM_REPLACE, /**< This indicates that the specified set of topic names and/or selectors should replace any current selections */
89DSM_REMOVE, /**< Specifies that the specified set of topic names and/or selectors should be removed from the current set of selections. Only string values that exactly match previously set selectors will be removed */
90DSM_CLEAR/**< Specifies that all current selections should be removed */
99DNL_MINIMUM, /**< The minimum level of notification that can be received which will simply notify the topic name and its type */
100DNL_PROPERTIES, /**< This level of notification is the same as DNL_MINIMUM plus all properties of the Topic. See DFTopicProperty and DFTopicDefinition. */
101DNL_METADATA, /**< This level of notification is the same as DNL_MINIMUM plus any metadata associated with the Topic. */
102DNL_FULL, /**< The level of notification provides all details of the Topic and would be the level needed in order to replicate the Topic. This is equivalent to DNL_MINIMUM plus DNL_PROPERTIES plus DNL_METADATA. */
103DNL_NONE/**< This special setting may be used to indicate that add notifications are not required */