Modify instance properties to change a link's identity data and IFC parameter values.
To change instance properties, select the element and change its properties on the Properties palette.
| Name | Description | 
|---|---|
| Identity Data | |
| Comments | Displays a comment hat you enter or select from the drop-down list. Once entered, you can select a comment for other instances of elements in the same category, regardless of type and family. | 
| Mark | A user-defined element label. Use mark values to tag elements and identify them in a schedule. | 
| IFC Parameters | |
| Export to IFC | Define how the element is exported to an IFC file. Use the drop-down to select an export option: 
 | 
| Export to IFC As | IFC entity used by the element in an IFC export. Launch the dialog to select the IFC entity from a defined IFC Schema. | 
| IFC Predefined Type | IFC predefined type used by the element in an IFC export. Launch the dialog to select the IFC predefined type from a defined IFC Schema. | 
| IfcGUID | GUID used for element when exported to IFC. |