<milestone> (balise de bornage) marque un point limite séparant n'importe
quelle section d'un texte, indiquée par des changements dans un système de
référence normalisé, lorsque la section n'est pas représentée par un élément
structurel. 3.10.3 Milestone
Elements
physical page breaks (synonymous with the <pb>
element).
column
column breaks.
line
line breaks (synonymous with the <lb> element).
book
any units termed book, liber, etc.
poem
individual poems in a collection.
canto
cantos or other major sections of a poem.
stanza
stanzas within a poem, book, or canto.
act
acts within a play.
scene
scenes within a play or act.
section
sections of any kind.
absent
passages not present in the reference edition.
Note
If the milestone marks the beginning of a piece of text not
present in the reference edition, the special value absent
may be used as the value of unit. The normal interpretation
is that the reference edition does not contain the text which follows,
until the next <milestone> tag for the edition in question is
encountered.
In addition to the values suggested, other terms may be appropriate
(e.g. Stephanus for the Stephanus numbers in Plato).
For this element, the global n attribute indicates the new number or other value for the unit which changes
at this milestone. The special value unnumbered should be used in
passages which fall outside the normal numbering scheme (e.g. chapter
heads, poem numbers or titles, or speaker attributions in verse
drama).
The order in which milestone elements are given at a given point is not normally
significant.