Unknown metadata values

When visualizing a metadata category where one or more nodes in the tree have undefined values, these nodes will be visualized using a default value. This value will always be shown in italics in the top of the legend (see figure 21.28). To remove this entry in the legend, all nodes must have a value assigned in the corresponding metadata category.

Image unknown_legend_value
Figure 21.28: A legend for a metadata category where one or more values are undefined.