
Optional icons for the legend that can be used instead of colors. All images should be of size 12px x 12px, so that they can be aligned to the other entries, for instance to explain the semantic colors. The sizes of smaller or larger icons are not changed to 12x12.
This property can be personalized by an administrator.
A stripe is displayed in front of the text. If a value has been assigned to the property imageSource, this value is ignored here.