Abstract: Method, apparatus, and document structure used to translate a document having one structure into a document having another structure. A document having the first structure is translated into an equivalent document having an intermediate structure, and the document having the intermediate structure is translated into an equivalent document having the second structure. The intermediate document structure is sequential, and translation from the document having the intermediate structure to the document having the second structure may begin before the translation from the document having the first structure to the document having the second structure is complete. The sequential document structure consists of segments representing components of the document. If a given component is dependent from another component, the dependent component is nested within the component it is dependent from. The entire document is represented by a segment in which all segments representing components are nested.