| ed | (edition) indicates which edition or version the milestone applies to. |
| Datatype: CDATA |
| Values: Any string of characters; usually a siglum conventionally used
for the edition. |
| Default: #IMPLIED |
| Note | If ed is not specified, then any milestone
tag with an appropriate unit attribute will be selected.
|
| unit | indicates what kind of section is changing at this milestone. |
| Datatype: CDATA |
| Legal values: | | page | page breaks in the reference edition.
| | column | column breaks.
| | line | line breaks.
| | 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. |
|
| Default: #REQUIRED |
| Note | |
| length | specifies the fixed length of the reference component. |
| Datatype: NUMBER |
| Values: Should be a positive integer; if no value is provided,
the length is unlimited and goes to the next delimiter or to the
end of the value. |
| Default: #IMPLIED |
| Note | When constructing a reference, if the reference component
found is of numeric type, the length
is made up by inserting leading zeros; if it is not, by inserting
trailing blanks. In either case, reference components are truncated
if necessary at the right hand side.
When seeking a reference, the length indicates the
number of characters which should be compared. Values longer than
this will be regarded as matching, if they start correctly.
|
| delim | supplies a delimiting string following the reference
component. |
| Datatype: CDATA |
| Values: If a single space is used it is interpreted as
whitespace. |
| Default: #IMPLIED |
| Note | |