Visual Dictionary
Selecting the Key to use  
Key to use for view A data file can have multiple keys defined. To change the key being used to retrieve/view the file contents, click on the far left column on the row with the ruler and select the desired key from the options presented.

By default, when a file is first loaded, its primary key (Key #0) is used.

Note that changing the key to be used will cause the system to reset the starting key value displayed.