You can create a tile image or visualize markups on top of the tile image by selecting a region in the image. The region has a limit on area due to the memory constraint.
To create a tile image, select an image and then select a rectangle region by mouse (left-click for a starting point, mouse-release for an ending point), and select "Tile Image."
To visualize markups in a region, select an image, select a method (NS-MORPH is by algorithm, TR-HUMAN is by human), select a region, and select "Get Markkup."
You can also choose a default operation and default output image type to avoid repeating selections.