This is a true OLE collection, a consisting of DicomLabel objects.
Although it may be instantiated independently, the most common examples of such collections are the Labels properties of DicomViewer and DicomImage objects, representing the labels to be drawn over that viewer or image respectively.
The order of the objects in a collection may be significant if they overlap, as Labels are drawn in ascending numerical order, possibly partially or completely over-writing those below them in the numbering sequence. The order of the objects in a collection may be significant if they overlap, as Labels are drawn in ascending numerical order, possibly partially or completely over-writing those below them in the numbering sequence.