This object holds the actual matching text -- a case-sensitive string -- that the switch's deep-packet-inspection engine compares against either the HTTP Host header or the TLS Client Hello server name to recognize a specific application's traffic. Administrators enter this pattern when creating a custom application signature so the device can identify and act on traffic to a particular web service that isn't covered by the vendor's default signature set. For example, an admin might set this pattern to 'mycompany-app.example.com' to have the switch recognize and classify traffic destined to that specific internal web application.