Texture View

The Texture View will display all textures for the UDIMs that you have on the currently selected Polygon Object.

It will also display the channel that you have selected in from the Layer View. By selecting a different channel, such as bump, it will change to display all the UDIMs for the bump channel on the currently selected Polygon Object.

Navigation

Click+Drag the middle mouse button to move the canvas around
Scroll the middle mouse wheel to zoom in/out based on the cursor position.

Refresh Textures

After painting on the textures this view does not automatically update. If you wish to see the latest texture then you will need to refresh the textures using this button.