Remember that Autodesk MapGuide tips are here and use the right mouse button in MapGuide if you need help. Some of the tips are for features that aren't on this world map.
When you double-click on a map feature that has the pointing hand cursor (such as confluence points), you get more information about that feature. In tight areas, you may need to be careful to double-click on the desired map feature and not something else. You may want to zoom in more or turn off other layers to make it easier if you have trouble.
Double-clicking on map features brings up another browser window. You will then have one window for the request and one for additional information. When you are in the new window, the browser's "Back" button does not take you back to the requesting window. After looking at additional information, you can dismiss the window. If you minimize the new window instead, new double-click requests may be hidden in the minimized window.
See Tips for Viewing Degree Confluence Layers.