Wireless intelligent stream handling (WISH) is a type of software which prioritizes the traffic of different applications over a wireless network.
WISH makes use of three different priority classifiers which enables a user to choose what kind of traffic should be preferred.
[1] With this option enabled video and audio streams that use HTTP (so basically all videos played in the browser) are preferred over other kinds of traffic.
With this option enabled the access point will recognize specific video and audio streams used by Media center PC's and Windows Media Center Extenders, for instance the Xbox 360.
Automatic mode makes the access point attempt to prioritize traffic that is recognized as a stream but not necessarily a HTTP or Windows Media Center stream.