How to Open. You need to click on your file button, then click 'downloads'. The most recent one should be clangen. Double click on that. Then double click on the 'Clangen' file, should be on top. Then scroll down until you find 'clangen'. Double click on it, and 'extract all'. Then confirm and wait. When it's done, double click on 'Clangen' again, scroll, and 'clangen' should be a different symbol. Double click and wait. It might take a moment, but it'll load.