Data Set Properties
Data Sets are named and described as part of the Data Set Properties.
To view and/or edit the properties of a Data Set, right click on a Data Set name on the side bar. A context menu will appear:
Click 'Edit Properties' to display the Data Set Properties dialog:
Data Set Properties
If a Data Set was created from an imported file, the path to the file will display in the 'Source File' area of the dialog.