Web Workers, for instance, is an emerging system for isolating a browser's individual tasks into separate "threads, " making it easier for a browser-based program to perform a computationally intensivetask such as photo-editing in a background tab while the user is attending to something else, like e-mail, in the foreground.
But they did not find Frank Harling, either on that day or in the course of one of the most intensive manhunts ever mounted by the Major Crimes Task Group.