export CLASSPATH=$CLASSPATH:${ditaot_dir}/lib:${ditaot_dir}/lib/dost.jar:${ditaot_dir}/lib/resolver.jar
Before installing the DITA Open Toolkit small package and its prerequisite software on Windows, check to see if any of the required tools are already installed on your system and, if so, whether the version you have is supported (see System requirements and supported applications). For any tools you need to install, complete the tasks below in the order shown.