Multi-Category links are useful when elements from more than one Revit category are to be included in a link. The categories used by multi-category link are defined in Link Properties.
To create a Multi-Category link, select New... from the main dialog and then pick the first category listed within the New Link Category dialog, as shown.
Select "Next>" to and review the list of Categories available for the multi-category link.
NOTE: Fewer properties are available to multi-category links than to links based on a single category; multi-category links do not include non-shared family parameters. For more information, see Available Revit Properties.
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