+If the temperature is in the range defined by:
+
+pwm[1-5]_target Target temperature, unit millidegree Celsius
+ (range 0 - 127000)
+pwm[1-5]_auto_temp1_hyst
+ Hysteresis, unit millidegree Celsius
+ Hysteresis value is relative to pwm[1-5]_auto_temp1.
+
+there are no changes to fan speed. Once the temperature leaves the interval,
+fan speed increases (temp is higher) or decreases if lower than desired,
+using the following steps and times.
+
+pwm[1-5]_start_output fan pwm start value (range 1 - 255), to start fan
+ when the temperature is above defined range.
+pwm[1-5]_stop_output lowest fan pwm (range 1 - 255) if temperature is below
+ the defined range.
+pwm[1-5]_stop_output_enable
+ Set to 1 to enable pwm[1-5]_stop_output. If disabled
+ (set to 0), the fan will stop if the temperature is
+ below the defined range.
+pwm[1-5]_step_up_time milliseconds [ms] before fan speed is increased
+pwm[1-5]_step_down_time milliseconds [ms] before fan speed is decreased
+pwm[1-5]_stop_time how many milliseconds [ms] must elapse to switch
+ corresponding fan off (when the temperature was below
+ defined range).
+
+Speed Cruise mode (3)
+---------------------
+
+This modes tries to keep the fan speed constant.
+Untested; use at your own risk.
+
+Smart Fan IV mode (5)
+---------------------
+
+The fan is regulated to maintain a target temperature. There are five data
+points. Subsequent data points should be set to higher temperatures and higher
+pwm values to achieve higher fan speeds with increasing temperature. The last
+data point reflects critical temperature mode, in which the fans should run at
+full speed.
+
+pwm[1-5]_auto_point[1-5]_pwm
+ pwm value to be set if temperature reaches matching
+ temperature range.
+pwm[1-5]_auto_point[1-5]_temp
+ Temperature at which the matching pwm is enabled.
+pwm[1-5]_step_up_time milliseconds [ms] before fan speed is increased
+pwm[1-5]_step_down_time milliseconds [ms] before fan speed is decreased
+pwm[1-5]_step_enable Set to 1 to enable fine grain speed control.
+ If disabled, pwm values will increase or decrease to
+ the values configured in the auto_point_pwm attributes.
+ If enabled, pwm values will be interpolated, resulting
+ in a more fine-grained fan control, resulting in a more
+ fine-grained fan control
+
+
+Usage Notes
+-----------