This repository contains ALTO schema versions - drafts and final released ones.
All open issues and discussions about changes to the ALTO standard can be found and tracked in the issues repository
Latest official schema version is 4.2.
Primary source for the schema is (http://www.loc.gov/standards/alto/v4/alto-4-2.xsd)
Alternate source for the schema is (https://cdn.rawgit.com/altoxml/schema/master/v4/alto-4-2.xsd)
Summary of proposed changes
- Change schema version to 4.2
- Change
BASELINE
to accommodate a list of points in addition to a single point - Make
FONTSIZE
optional - Add
strikethrough
to list of allowed values forFONTSTYLE
Details about the changes of the version and further documentation can be found in the ALTO documentation repository.