7.74.1 IF_REF Parameters
COM
IS and IS_NOT
COM
The COM parameter identifies one or more component variables that are the target of the comparisons.
IS and IS_NOT
Specifies the reference expression that must be true to make the IF condition true. It can be one of these:
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*NULL
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Checks if the variables identified by the COM parameter are set to *NULL
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*EQUAL_TO #VariableName
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Checks if the variable identified by the COM parameter is equal to this variable. In other words the condition checks if both variables refer to the same component instance.
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*INSTANCE_OF ClassName
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Checks if the variable identified by the COM parameter is of the type identified by the class name or of the type of ancestors identified by the class name.
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*KIND_OF ClassName
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Checks if the variable identified by the COM parameter is of the class identified by the class name value.
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Refer also to Specifying Conditions and Expressions.
