 Quite clearly, meaning determining rules would be constitutive rules (see  section 1.2  above). Typically, they are taken to determine not only that expressions have meaning, but also which meanings they have. A rule \(R\) governing the use of an expression \(e\), the thought is, divides possible uses of \(e\) into those that accord with R and those that do not. On the assumption that the former are the semantically correct uses of \(e, \ R\) thus endows \(e\) with semantic correctness conditions, i.e., meaning. Ideas like this are drawn on by a great number of philosophers, including Wittgenstein scholars such as Baker and Hacker or Glock, as well as philosophers such as von Wright, Sellars, and Searle.