The Lexical Markup Framework (LMF) is a meta-model for representing data in monolingual and multilingual lexical databases with a view to its use in computer applications. The "new LMF" replaces the old LMF standard, ISO 24613:2008, and is being published as a multi-part standard. This short paper introduces one of these new parts, ISO 24613-6, namely the Syntax and Semantics (SynSem) module. The SynSem module allows for the description of syntactic and semantic properties of lexemes, as well as the complex interactions between them. While the new standard remains faithful to (and backwards compatible with) the syntax and semantics coverage of the previous model, the new standard clarifies and simplifies it in a few places, which will be illustrated.