<ab>

<ab> (anonymous block) contains any arbitrary component-level unit of text, acting as an anonymous container for phrase or inter level elements analogous to, but without the semantic baggage of, a paragraph. 16.3 Blocks, Segments, and Anchors
組件linking — 16 Linking, Segmentation, and Alignment
屬性 att.typed (@type, @subtype)
partspecifies whether or not the block is complete.
狀態 可應用時必備的
合法的值是:
Y
(yes) the block is incomplete
N
(no) either the block is complete, or no claim is made as to its completeness [預設值]
I
(initial) the initial part of an incomplete block
M
(medial) a medial part of an incomplete block
F
(final) the final part of an incomplete block
The values I, M, or F should be used only where it is clear how the block is to be reconstituted.
屬於 model.pLike
可包含
宣告
element ab
{
   att.global.attributes,
   att.typed.attributes,
   attribute part { "Y" | "N" | "I" | "M" | "F" }?,
   macro.paraContent
}
The <ab> element may be used at the encoder's discretion to mark any component-level elements in a text for which no other more specific appropriate markup is defined.