This enumeration identifies attributes common for all annotations.

Values:

IG_ARTX_ATTR_MARK_TYPE	Identifies annotation type ID.
IG_ARTX_ATTR_MARK_BOUNDS	Identifies annotation bounding rectangle.
IG_ARTX_ATTR_MARK_VISIBLE	Identifies annotation visibility state.
IG_ARTX_ATTR_MARK_USER_DATA	Identifies user data associated with annotation.
IG_ARTX_ATTR_MARK_TOOLTIP	Identifies tooltip text string associated with annotation.
IG_ARTX_ATTR_MARK_HITTEST_BOUNDS	Identifies annotation hit-test bounds. Read-only attribute.