Interlinear text is a common presentational format for linguistic information, and its creation and management have been greatly facilitated by the development of specialised software. In earlier work we developed a four-level mode and corresponding formal specification for interlinear text. Here we describe a suitable XML representation for the model and show how it can be rendered into a variety of convenient presentational formats. We conclude by discussing architectural extensions, and application programming interface for interlinear text, and prospects for embedding the interlinear model into existing applications.