This parameter allows you to specify directly the names of the global element groups to be documented in separate <b><i>Element Group Documentation</i></b> blocks.
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These should be the local names (without namespace prefixes) of the element group components separated with newlines or semicolons (';'). Only the groups with the specified names will be documented.
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When the list of names is empty (the parameter is not specified), all global element groups will be documented.