Scope and Contents Comments by Johanna Drucker on internet: The concept of the "diagram" is vaguely defined in common usage, used to refer to a broad variety of schematic images"”graphs, charts, anatomical images, working drawings and so on. By working towards a tighter definition, we might use the term to refer to a specific category of graphical expressions that spatialize relations. These relations, I suggest, are themselves meaningful"”they are a kind of poetics, a bringing into being of meaning through articulation and expression. The materiality of this poetics of relations provides a way to analyse its formats and features"”to get at, to grasp, to read, see, describe, elaborate the particulars of diagrammatic expressions. The even more specific attention to writing, to written discourse organized in graphical form, exposes the workings of diagrammatic activity within the field of visual verbal activity. We depend upon these, but rarely stop to describe or discuss their structuring principles...