Display
The display menu let you choose the current mapping channel that you would like to visualize / edit in UVReactor, by changing the Mapping Channel.
Edit Threshold¶
You can set up a safe value in case you are using UVR while you are modeling, or editing a massive amount of objects. This toggle is active by default, so you can mitigate all situations, when you select a massive number of objects or polygons, where UVR would slow down. UVReactor is a fast UV editor, but as all software it has its limits as well.