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+# This file is part of systemd.
+#
+# The lookup keys are composed in:
+# 60-evdev.rules
+#
+# Note: The format of the "evdev:" prefix match key is a
+# contract between the rules file and the hardware data, it might
+# change in later revisions to support more or better matches, it
+# is not necessarily expected to be a stable ABI.
+#
+# Match string formats:
+# evdev:<modalias>
+# evdev:name:<device name>:dmi:<dmi string>
+#
+# To add local entries, create a new file
+# /etc/udev/hwdb.d/61-evdev-local.hwdb
+# and add your rules there. To load the new rules execute (as root):
+# udevadm hwdb --update
+# udevadm trigger /dev/input/eventXX
+# where /dev/input/eventXX is the device in question. If in
+# doubt, simply use /dev/input/event* to reload all input rules.
+#
+# If your changes are generally applicable, open a bug report on
+# http://bugs.freedesktop.org/enter_bug.cgi?product=systemd
+# and include your new rules, a description of the device, and the
+# output of
+# udevadm info /dev/input/eventXX
+# (or /dev/input/event*).
+#
+# Allowed properties are:
+# EVDEV_ABS_<axis>=<min>:<max>:<res>:<fuzz>:<flat>
+#
+# where <axis> is the hexadecimal EV_ABS code as listed in linux/input.h
+# and min, max, res, fuzz, flat are the decimal values to the respective
+# fields of the struct input_absinfo as listed in linux/input.h.
+# If a field is missing the field will be left as-is. Not all fields need to
+# be present. e.g. ::45 sets the resolution to 45 units/mm.