Specifies limits when is the action executed.

Item Summary
Name	Type	Multiplicity	Description
lowWaterMark	container WaterMarkType	[0,1]	Lower bound of the threshold.
highWaterMark	container WaterMarkType	[0,1]	Upper bound of the threshold.
timeInterval	container TimeIntervalType	[0,1]	TODO: time interval!

Items
- lowWaterMark
  
  Flags: RAM,runtime
  
  Multiplicity: [0,1]
  
  Display order:
  
  Lower bound of the threshold. Lowest value for which the policy rule is activated. The policy rule will be triggered for all values starting from this value up until the high water mark (closed interval). If no low water mark is specified then the policy rule will be activated for all values up to the high water mark. Policy rule with a threshold that does not have any water marks will never be activated.
- highWaterMark
  
  Flags: RAM,runtime
  
  Multiplicity: [0,1]
  
  Display order:
  
  Upper bound of the threshold. Highest value for which the policy rule is activated. The policy rule will be triggered for all values starting from low water mark up until this value (closed interval). If no high water mark is specified then the policy rule will be activated for all values that are greater than or equal to high water mark.
- timeInterval
  
  Flags: RAM,runtime
  
  Multiplicity: [0,1]
  
  Display order:
  
  TODO: time interval!