In DITA Open Toolkit 1.3, the system-level Ant scripts have been refactored so that developers can easily find the targets they need and create their own extensions.
Developers can still use the Java command line as before. Ant build script conductor.xml is marked as deprecated, but it can still be used. Script build.xml is the renamed version of conductor.xml, and developers can also continue to use it, as well.
New users should use build scripts like build_dita2*.xml.
The original demo ant script build.xml has been renamed to build_demo.xml. The command ant -f build_demo.xml should now be used to verify the functions of the Toolkit.