DITAにはdir属性というのがあります． 3.4.1.6 localization-atts attribute group http://docs.oasis-open.org/dita/v1.2/os/spec/common/localization-atts.html#localization-atts 2.1.3.9.2 The dir attribute http://docs.oasis-open.org/dita/v1.2/os/…