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| Keyword | purge |
| Purpose | List attributes, like regular attributes, can inherit their values from the enclosing property. By defining more values for such a list attribute, the new values will be appended to the existing ones. The purge statement clears such a list atribute. A subsequent definition for the attribute within the property will then add their values to an empty list. |
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| Syntax | purge <attribute> |
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| Arguments | attribute [ID] | Any name of a list attribute |
| Context | supplement (resource), task, supplement (task), report, resource | |
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