/sys$common/syshlp/USB$SDA_HELP.HLB  —  SHOW
   Shows information about the BUS, Devices, Controllers, Endpoints,
   Interfaces, HID common layer, Requests, and BUS topology for the selected
   controller.
Additional Information: explode extract
BUS DEVICE EHCI ENDPOINT HID HUB INTERFACE OHCI PIPE REQUEST ROOT TOPOLOGY UHCI
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