I am again grateful to an enquiry from a teacher about an apparent contradiction – this time between our AS Complete Companion and another AS book. Logie (1995) proposed that the visuo-spatial sketchpad (a component of the working memory model) could be further divided into a visual cache and inner scribe. In the Complete Companion we have said that the cache is a store and the scribe deals with spatial relations, whereas another AS book says that the cache is a store and the scribe is a rehearsal mechanism. Both versions are correct and both lack detail.The visual cache is a passive store. It holds information about form and colour. However some research evidence (e.g. Coleman and LeFevre, 2002) has found that information is actively rehearsed.The inner scribe is an active rehearsal component. It is proposed to deal with spatial and movement information. There also may be some storage component.Any further comments welcome!