Graphics DTD allows conversion of vectors and charts between proprietary authoring software formats. Trace the development background through GML and the GTL extension.

High-level XML schema for educational applications claims to modularize media and structural objects. View examples in the field of mathematics.

DTDs for representing sheet music approach transcription via measures within parts, and vice-versa. Explore schemas for multiple movements and MIDI files.

Literary scholars and professionals are encouraged to adopt a DTD for displaying and indexing collections of verse and text. Download tools for searching and converting.

Directory of industry- and independent developer-provided DTDs helps developers produce education, multimedia, scientific, and commerce frameworks.

Cognitive science project delivers a linguistics application for natural language processing, via the three-tiered DTD elucidated here.

Resource on chemical markup language discusses how molecular information can be displayed on the web using Internet tools such as Java.