Specify which item in the Project View pane to perform the requested action on.
This dialog is displayed if you have selected an action that could apply to more than one item in the pane, without first selecting the specific item to which the action should apply.
For example, if the current project has more than one report and you have selected one of the Add report_item entries in the Report menu without first selecting a specific report in the Project View pane, then this dialog will appear.