#TargetType.TaggedValue	CommaSeparatedExampleValues	Short Description
#Span.DoNotSearchOnEnter	Existence	UI's in WPF and Turnkey will search on enter as it has seek expressions - you can turn this off by defining this TV on the ViewModel level

The default behavior of a seeker ViewModel is that the search button (a column is tagged as a seeker) starts the search when you press "Enter". If you don't want "Enter" to start the search, you can use #Span.DoNotSearchOnEnter to turn it off.