[CLEAN\]UV_TRACKS ... /FRAME [size] [/HOUR_ANGLE Hmin [Hmax]] [/TABLE [Name]] [/HORIZON Elmin] [/INTEGRATION t] [/STATIONS ALL|list] [/WEIGHT Mode] Option /FRAME [size] should be used to start a new UV coverage. It clears the plot, draws the box, and open a new table if /TABLE is present. 'size' is the maximum UV spacing plotted, in meters (default 800 m). Subsequent call to the command (without /FRAME) adds the new configurations.