Language Reference Guide : 4. System Classes : CompSource Class : IsStale Attribute
 
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IsStale Attribute
Data Type: smallint
4GL Access: RW
The IsStale attribute is TRUE if a component needs to be recompiled.
You can set this attribute to force recompilation on the next call. If you make changes to a SourceObject that might change the return type of the frame or procedure, set this value so that OpenROAD automatically recompiles the object on the next call to the frame or procedure.