When a user goes to their Tasks and selects one, they get a URL similar to the following:
/Forms/form/approval/17eaed49-f97c-44e4-9063-42cba979f1e3/1/MyTasks?rHash=%3Fbpid%3D0%26so%3D0%26gb%3Dstarttime%26x%3D1
Where does the value 17eaed49-f97c-44e4-9063-42cba979f1e3 come from?