Version: unspecified (using Devel) OS: All It could be very usefull to have a methode to clear marble from all loaded track (GPX KML KMZ ...) Reproducible: Didn't try
Position tracking allows to clear its track (MarbleWidget::model()->positionTracking()->clearTrack()), and other files loaded via MarbleWidget::model()->addGeoDataFile() can be cleared with MarbleWidget::model()->removeGeoDataFile().