Working with Attached References
Except for Attach Reference, the reference tools operate on the models that are selected in the References dialog. If no model is selected there, you are prompted to identify a model. See Identifying references for more information.
The tools in the Reference toolbox operate on the models that are selected in the Model tab of the Project Explorer dialog. Right-click a reference in the Model tab of the Project Explorer dialog to open the pop-up menu which allows you to do the following operations on a reference:
The reference tools operate on the models that are selected in the References dialog. If no model is selected there, you are prompted to identify a model. See Identifying references for more information.
Most of the following procedures work only when you are working with Composition files.
The <Ctrl> and <Shift> keys are used to select multiple models.