When do I use the Merge and Group tools?
In some images, a single object or area is made up of multiple boxes or outlines.
For example: there are trees in this image blocking the Vehicle Bus, so it was drawn using three outlines.
Other times, a missing section can be added to an already outlined object.
For example: this Ground Road was drawn in multiple sections, but it is one continuous area.
Use 'Merge' when outlines are touching. 'Merge' combines multiple boxes or outlines into one single outline. Be sure that the label is correct after merging.