While running any .swf Flash file in your browser you can see all the output generated by the "trace" flash functions in this sidebar component. You *NEED* the flash player debug version to run this extension correctly, see http://www.adobe.com/support/flashplayer/downloads.html P.S. If you're running the new 9,0,28 Flash plugin probably you noticed this extension won't work anymore. Adobe changed
![FlashTracer – Get this Extension for 🦊 Firefox (ja)](https://cdn-ak-scissors.b.st-hatena.com/image/square/5bef157ebce81cb5ae2b4d7f8318cee415abb888/height=288;version=1;width=512/https%3A%2F%2Faddons.cdn.mozilla.net%2Fuser-media%2Fpreviews%2Ffull%2F8%2F8947.png%3Fmodified%3D1530208110)