This release - if the user declines to accept the DXLab License, informs the DXLab Launcher that DXView is terminating - eliminates unnecessary repainting of the world map when a location is selected by clicking on the world map or by specifying a grid square - makes the number of pending lookup requests accessible to other applications (tnx to Scott N9LJX) - adds a Gray-Line mode to the Sunrise/Sunset window that displays the start and end of sunrise or sunset Gray-line openings between your QTH and the currently selected location for the next 100 days during which such openings occur (tnx to Ken NS7V, Iain N6ML, Salvatore I4FYV, Joe W4TV, Nuno CT2IRY, and Björn SM7IUN) - when a sunrise, sunset, Gray-Line start, or Gray-Line end time is clicked in the Sunrise/Sunset window, sets the built-in world map to display the sun's position and terminator at that time (tnx to Ken NS7V, Iain N6ML, Salvatore I4FYV, Joe W4TV, Nuno CT2IRY, and Björn SM7IUN) - extends the rotator serial port to use COM1 through COM99 (tnx to John K3MA) - updates the Configuration.htm, DXCC.htm, index.htm, and Operation.htm documentation files Notes: 1. Update your firewall and anti-malware applications to consider this new version of DXView to be "safe" 2. If this upgrade doesn't work correctly, see the "After an Upgrade" section of 3. After upgrading, to revert to the previous version of DXView, see DXView 4.3.1 is available via the DXLab Launcher or via 73, Dave, AA6YQ