The global PlanElement element (to be used via 'ref') is a singlestep in a plan. This element may be replaced (as provided bysubstitution group declarations) by any of the following elementsrepresenting types of step: OrderedActionGroup UnorderedActionGroup, PartiallyOrderedActionGroup OneOfActionGroup PickSomeActionGroup IfActionGroup WhileActionGroup MeasureEvaluateAll MeasureEvaluateSpecified EvaluateSpecifiedCharacteristics Halt MeasureSpecifiedFeatures MeasureSpecifiedMeasurands VariableSet
<xs:element name="PlanElement" type="PlanElementBaseType" abstract="true"><xs:annotation><xs:documentation>The global PlanElement element (to be used via 'ref') is a single step in a plan. This element may be replaced (as provided by substitution group declarations) by any of the following elements representing types of step: OrderedActionGroup UnorderedActionGroup, PartiallyOrderedActionGroup OneOfActionGroup PickSomeActionGroup IfActionGroup WhileActionGroup MeasureEvaluateAll MeasureEvaluateSpecified EvaluateSpecifiedCharacteristics Halt MeasureSpecifiedFeatures MeasureSpecifiedMeasurands VariableSet</xs:documentation></xs:annotation></xs:element>