On my computer, the minimum brightness enforced by clamping in
backlight is too bright.
Let udev property ID_BACKLIGHT_CLAMP control whether the brightness
is clamped or not.
When set to 0 this will stop tools like the backlight and rfkill tools to
restore state from previous boot. This is useful in case the stored state
is bogus to the extent that it is preventing you from resetting it (e.g.,
the backlight settings cause the screen to be off on boot on a system where
the backlight can not be adjusted directly from the keyboard).
This includes regularly-submitted corrections to comma setting and
orthographical mishaps that appeared in man/ in recent commits.
In this particular commit:
- the usual comma fixes
- expand contractions (this is prose)
