-What:          /sys/devices/platform/dock.N/docked
+What:          /sys/devices/platform/dock.<N>/docked
 Date:          Dec, 2006
 KernelVersion: 2.6.19
 Contact:       linux-acpi@vger.kernel.org
                (RO) Value 1 or 0 indicates whether the software believes the
                laptop is docked in a docking station.
 
-What:          /sys/devices/platform/dock.N/undock
+What:          /sys/devices/platform/dock.<N>/undock
 Date:          Dec, 2006
 KernelVersion: 2.6.19
 Contact:       linux-acpi@vger.kernel.org
                (WO) Writing to this file causes the software to initiate an
                undock request to the firmware.
 
-What:          /sys/devices/platform/dock.N/uid
+What:          /sys/devices/platform/dock.<N>/uid
 Date:          Feb, 2007
 KernelVersion: v2.6.21
 Contact:       linux-acpi@vger.kernel.org
 Description:
                (RO) Displays the docking station the laptop is docked to.
 
-What:          /sys/devices/platform/dock.N/flags
+What:          /sys/devices/platform/dock.<N>/flags
 Date:          May, 2007
 KernelVersion: v2.6.21
 Contact:       linux-acpi@vger.kernel.org
                request has been made by the user (from the immediate_undock
                option).
 
-What:          /sys/devices/platform/dock.N/type
+What:          /sys/devices/platform/dock.<N>/type
 Date:          Aug, 2008
 KernelVersion: v2.6.27
 Contact:       linux-acpi@vger.kernel.org