The Surface Manager is used to review surfaces that have been loaded into memory.  Every time that a new surface is loaded into TrueMap, a thumbnail image of that surface is added to the Surface Manager window.  You can close any surface window at any time.  The surface can then be viewed in a new window by simply clicking the thumbnail image.  If you click on a thumbnail image and the surface is already being displayed in a window, then that window will be activated.

The Delete option will delete the surface from TrueMap's memory.

The Description toolbar button hides/shows the surface properties.