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Joachim Bauer edited this page Jun 16, 2016 · 6 revisions

Summary of changes for version 2.1

  • Page and BlockType element HEIGHT, WIDTH, HPOS, VPOS attribute types changed to xsd:float from xsd:int.
  • CircleType HPOS, VPOS and RADIUS attribute type definitions added as xsd:float and made mandatory. Element annotation clarified.
  • EllipseType HPOS,VPOS,HLENGTH and VLENGTH attribute type definitions added as xsd:float and made mandatory. Element annotation clarified.
  • MeasurementUnit defined as mandatory and element annotation clarified.
  • HYP element's CONTENT attribute type definition added as xsd:string.
  • CS attribute added to String and Block.
  • LANG attribute added to String, TextLine and TextBlock. "language" attribute in TextBlock deprecated.
  • Tags (LayoutTag / StructureTag / RoleTag / NamedEntityTag / OtherTag) added to allow for tagging content.
  • TAGREFS attribute added to BlockTypes, TextLine and String.
  • HEIGHT attribute added to HYP and SP elements.

Full documentation of all detailed changes can be found here: ALTO changes 2.1

[Tag usage examples] (http://altoxml.github.io/documentation/use-cases/tags/ALTO_tags_usecases.html)

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