| Attributes | att.global (@xml:id, @n, @xml:lang, @rend, @rendition, @xml:base, @xml:space)  (att.global.linking (@corresp, @synch, @sameAs, @copyOf, @next, @prev, @exclude, @select))  (att.global.analytic (@ana))  (att.global.facs (@facs))  (att.global.change (@change)) att.pointing (@target, @evaluate) att.internetMedia (@mimeType) att.typed (@type, @subtype) att.declaring (@decls) 
    | cRef | (canonical reference) specifies the destination of the reference by supplying a canonical reference from a
        scheme defined in a refsDecl element in the TEI header | Status | Optional |  | Datatype | 1–∞ occurrences of separated by whitespace |  | Values | the value of cRef should be constructed so
      that when the algorithm for the resolution of canonical
      references (described in section 16.2.5 Canonical References) is
      applied to it the result is a valid URI reference to the
      intended target |  | Note | The refsDecl  to use may be indicated with the decls  attribute.Currently these Guidelines only provide for a single canonical reference to be encoded on
          any given ref  element. | 
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