No small task. The first step is to recognize exactly what it is we describe—the sensation of looking at the screen. Ninety percent of all verbal expression has no filmic equivalent. “He’s been sitting there for a long time” can’t be photographed. So we constantly discipline the imagination with this question: What do I see on the screen? Then describe only what is photographic: Perhaps “He stubs out his tenth cigarette,” “He nervously glances at his watch,” or “He yawns, trying to stay awake” to suggest waiting a long time.