IBM and software vendor JustSystems plan to announce on Tuesday the availability of a methodology that allows organizations to break up huge Extensible Markup Language documents into reusable pieces. The DITA Maturity Model, co-authored by IBM and JustSystems, is the first step-by-step process for implementing DITA, officials from the companies said. DITA is an XML Document Type Definition that can be used to mark up different sections of documents so they can easily be found later and reused in other documents.