Drag and drop extractor

If you look carefully Wandora's startup screen you may notice special icon right bottom corner of the Wandora window. This icon of arrows entering circle marks the drag and drop extractor in Wandora. Clicking on the icon opens extractor selection menu. Selected extractor name is shown left to the icon. After you have selected the extractor you can simple drag and drop files and folders on the icon and Wandora starts selected extractor for the files. This is very efficient method to construct a topic map out of files.