| 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.ascribed (@who) att.typed (@type, @subtype) att.timed (@start, @end)  (att.duration.w3c (@dur)) 
    | source | points to a bibliographic citation  giving
	a full description of the source or script of the
	writing. | Status | Optional |  | Datatype | 1–∞ occurrences of separated by whitespace |  | Values | Must point to a bibliographic element
      in the TEI  header or elsewhere | 
 |  | gradual | indicates whether the writing is revealed all at once or
	gradually. | Status | Optional |  | Datatype |  |  | Note | The value true indicates the writing is
	  revealed gradually; the value false that the
	  writing is revealed all at once. | 
 |  |