An observer for layers that use strength_patterns. Output is based on the variable timeout rule of MROM. If the layer's current_time is before check_time, return “?”. Otherwise, calculate the summed activity at check_time and compare to check_threshold. If the summed activity is greater than check_threshold, the timeout is late_timeout, otherwise early_timeout. If the current time is equal to or greater than the timeout, return “no”, else return “?”.

Is a parameter_client:

parameter	default\_value
early_timeout	0
late_timeout	0
check_time	0
check_threshold	0