The Patch Mode allows you to non-destructively extract and modify a specified area of the input image without having to remap or convert the whole image. For example, you can easily replace the nadir with a patch.
After loading an image into Pano2VR or opening an existing project, you can open Patches mode in the Viewer.
Double-click in the viewer to add a Patch. Once you do this you’ll see the patch icon will appear and its properties pane will open. A red icon means the patch is active, while a blue icon means it is not active.