This is the specific target the rule applies to, interpreted according to hh3cRbacRuleEntityType, such as a command regular expression, feature name, feature group name, web menu, XML element, or OID. An admin can leave it as a zero-length string for the feature, webmenu, or xmlelement entity types to make the rule apply to all instances of that type rather than one specific one. For example, with entity type set to feature, an empty string makes the rule apply to every feature on the device rather than a single named one.