The concept of structured documents has been well-established sincethe 1980's. Current word processors, e.g. Microsoft Office andOpenOffice.org are able to save documents in structured XML-basedformats. However, even if both formats are written in XML theydiffer in semantics. The topic of this thesis is to evaluate howcontent and structure is stored in the two formats, and whether it is possible to write a two-way converter program between them.