... under consideration. For in- stance, the generalized initial and final contexts of &apos ;a patch' are Initial context Final context p &apos ;a patch' SA SB p SA SB p FOCUS FA FB 0 0 ... MA Ms 0/0 MA MB 1/1 where FA, MA, etc. are variables. Among other things this rule implies that &apos ;a patch' may be used whatever the current focus values for SA and SB, but that after ... 'style' em- braces preferences regarding textual organization, wording, punctuation and layout. To cover a large range of styles, many patterns must be made avail- able to the generator,...