Reference The Reference topics provide more advanced information about the DITA-OT architecture, API and specification support, and licensing. Architecture of the DITA Open ToolkitThe DITA Open Toolkit is an open-source implementation of the OASIS specification for the Darwin Information Typing Architecture. The toolkit uses Ant, XSLT, and Java to transform DITA content (maps and topics) into different deliverable formats.DITA specification supportDITA Open Toolkit 3.0 supports all versions of the OASIS DITA specification, including 1.0, 1.1, 1.2, and 1.3.Java APIDITA-OT includes a Java Application Programming Interface to allow developers to embed DITA-OT more easily into other Java programs.License Information DITA Open Toolkit is released under the Apache License, Version 2.0.