The lexicogrammatical task is to map semantic configurations into well-formed surface strings. There are very many different techniques for the treatment of lexicogrammar: these range in flexibility from sets of fixed or parameterized structural templates (`phrasal lexicons': cf., e.g., [Hovy: 1988a]) that are triggered by specific communicative goals or semantic specifications, through to fully generic components that attempt to map any well specified semantic input to a corresponding string or set of strings. Approaches to this problem constitute by far the majority of work in NLG overall; although the accounts presented here are arguably the most widespread, there are numerous others varying to a greater or lesser extent in their details.