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indent-level Indentation Level

This numeric attribute indicates the level of indentation of a line of verse (<verse-line>), relative to the entire verse or stanza (<verse-group>) in which the line is found.

Usage/Remarks

Units of Measure

Note that the units in which indents are measured are left to the application; only relative positioning (“1” for level 1 indentation, “2” for level 2 indentation, etc.) is recorded in this attribute.
Formatting Verse
Although it is not the practice of JATS to encode the “look-and-feel” of a document, sometimes poetry, like tables, is all about formatting. There are four attributes on the various verse elements that deal with format:
OPTIONAL on element: <verse-line>
Value Meaning
Text, numbers, or special characters Typically a counting number that indicates the relative positioning of this verse line within its verse group, for example, “1” for level 1 indentation, “2” for level 2 indentation, etc. Note that the units in which indents are measured are left to the application.
Restriction @indent-level is an optional attribute; there is no default.
Tagged Sample

The @indent-level attribute can be used to control formatting. 

...
<verse-group>
  <verse-line><sc>There</sc> was a time when meadow, grove, and stream,</verse-line>
  <verse-line indent-level="1">The earth, and every common sight,</verse-line>
  <verse-line indent-level="3">To me did seem</verse-line>
  <verse-line indent-level="1">Apparell&rsquo;d in celestial light,</verse-line>
  <verse-line>The glory and the freshness of a dream.</verse-line>
  <verse-line>It is not now as it hath been of yore;&mdash;</verse-line>
  <verse-line indent-level="2">Turn wheresoe&rsquo;er I may,</verse-line>
  <verse-line indent-level="3">By night or day,</verse-line>
  <verse-line>The things which I have seen I now can see no more.</verse-line>
  <attrib>From Wordsworth&rsquo;s &ldquo;Ode: Intimations of 
    Immortality&rdquo; (1807).</attrib>
</verse-group>
...