After a number of Features have been chosen and the Entities Remaining list has been substantially reduced, some Features and States may be redundant for the identification.
A state is considered redundant if it applies to none of the Entities remaining, or to all of the Entities remaining (choosing such a State will either leave no entities or remove no Entities, so it is ineffectual to answer). A Feature is redundant if all of its States are redundant.
The Prune Redundants function will scan the Features in Features Available and remove any redundant Features and/or states for the remaining Entities. This may be useful to “clean up” the list of Features, to make it less likely that a choice will be ineffectual.
To activate the Prune Redundants function, choose Prune Redundants button on the toolbar.
Prune Redundants can be automated, so that it is recalculated after each feature is addressed. Choose the option Automate>Auto Prune from key settings page, if available.