A treatment program aimed at enhancing vocabulary could result in improvement in reading. Understanding what is read also involves much of the same language knowledge (vocabulary, grammar, sentence meanings, understanding of story structure, and verbal reasoning such as inferencing) as that involved in understanding what has been spoken. This knowledge is a focal point of school-based language intervention as well. Many of the methods used to promote grammatical skills in school-age children are the same as those described in the section on preschool language interventions, although the goals for grammatical development are more likely to involve use and, in particular, comprehension of complex sentences, such as those with relative clauses.