By convention, all Shibboleth 1.1 origin attribute values carry this unconstrained xsi:type. All sites have a Name attribute, plus optional i18n-ized aliases. A human contact for a site. A string element with an optional attribute signaling regexp content. Metadata about a SAML authority. Origin sites add at least one handle service (with a name), plus optional domains trusted for attribute scoping. Destination sites add at least one attribute requester (with a name). Used to logically group sites together, optionally signed. Binds a set of keying material to one or more named system entities. An optionally signed collection of KeyAuthority data.