DITA Help, as defined by the OASIS DITA Help SC (DHSC), is:
A set of recommendations for the design and implementation of commonly recognized user assistance components using the DITA architecture. These components include, but are not limited to, navigation components, context-sensitive linking, embedded Help, browse sequences, associative links and window definitions. These recommendations can be used as a foundation for the development of authoring models and tools to support solutions in a variety of formats and for a variety of platforms.