All closed articles should be instrumented with a page var.
There are two kinds of closed articles:
Hard closed articles
Articles closed for everyone like Opinion or long-form articles.
window.marfeel.cmd.push(['compass', function(compass) {
compass.setPageVar('closed', 'hard-paywall');
}]);
Dynamically closed articles
Articles closed dynamically based on user consumption, pageviews, rfv or any other metered strategy.
window.marfeel.cmd.push(['compass', function(compass) {
compass.setPageVar('closed', 'dynamic-paywall');
}]);
Flowcards targeting
On Experience Manager the closed pageVar can be leveraged as a custom var. This might be useful to exclude flowcards from closed articles.