 This structural rule SRK embodies the dialogical definition of the modal system K. Various versions of this rule can be used to account for other (normal) modal systems. In this fashion, the (normal) modal systems’ differences are manifested in the dialogical approach through different constraints on context information available to P (Rahman &amp; Keiff 2005). Here is an example of a play resulting from the rules seen so far (i.e., with SRK):