The Lexical Markup Framework (ISO 24613:2008) provides a core class diagram and various extensions as the basis for constructing lexical resources. Unfortunately the informative Document Type Definition provided by the standard and other available LMF serializations lack support for many of the powerful features of the model. This paper describes RELISH LMF, which unlocks the full power of the LMF model by providing a set of extensible modern schema modules. As use cases RELISH LL LMF and support by LEXUS, an online lexicon tool, are described.