From InFlow Technology: Data Card Alias Lists in SOLIDWORKS PDM
What is an Alias List, and how does it help me? Great questions!
An Alias list is a list of values for use on a data card. An Alias list can be used in any of the following controls:
An example way to use an Alias list is with a product line that includes a generic description as well as detailed codes belonging to the description. Such as a paint code.
When viewed on the data card, the above list appears as this:
When a selection is made and saved, the value that alias belongs to is placed into the custom properties of the file. The Alias displayed info will be what is seen on the data card, while the Alias is the value stored in the custom property.
An alias list can also be used in formulas for other values on the data card.