This option allows you to open a specific reference file.
From the File
menu, select Open to display the
list of available references.
or
Click on the Open
icon on the Standard toolbar on
the Reference Editor to display the list of available references.
Click on the desired reference. The Open dialog box appears.
Select the desired file and click on the Open button.
In the File Type area, you can choose All reference files to select another type of file.