Index: uspace/doc/main_usb.h
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--- uspace/doc/main_usb.h	(revision f3f97332d56ce8693a0ffcb97b4ffefaa24cd316)
+++ uspace/doc/main_usb.h	(revision f3f97332d56ce8693a0ffcb97b4ffefaa24cd316)
@@ -0,0 +1,26 @@
+/**
+ @mainpage ...bringing USB support to HelenOS
+
+This is reference manual for USB subsystem for HelenOS.
+
+HelenOS is a microkernel operating system where most of the functionality
+is provided by userspace tasks rather than system calls.
+This includes file system service, networking and also device drivers.
+
+USB is a standard for communication between host computers and computer
+peripherals.
+The advantage of USB over other kinds of connection between a computer
+and a peripheral is its flexibility.
+USB supports plugging and unplugging of devices without need to turn
+off any of the components.
+The data flow model is designed to accommodate together peripherals
+with different transfer characteristics.
+
+Adding support for USB devices to HelenOS shall improve the usability
+of the system in general even if the support concerns only USB 1.1 and
+the only peripheral drivers are for keyboards and mice.
+
+This reference documentation can be found also on-line at homepage
+of HelenOS USB project at http://helenos-usb.sourceforge.net/
+
+*/