Erik Loyer's Chroma forces the reader to collaborate in creating meaning in the text. As the reader, you must explore the screen with the mouse in order to "perform" the text (Loyer's term) and "read" its details. The meanings of the voice-over narration in each chapter are signified by visual changes you make to the screen. You choose how to visually portray the text, much like being the cinematographer of a film. Your palette is small to begin with. In Chapter 3, for example, you can manipulate a swirling, morphing three-armed bulb. You can choose to tangle the arms, let them swirl on their own, or "absorb" the fragments of the narration that appear in the corners of the screen. Each action promotes a different meaning in the voice-over narration. By Chapter 6 your visual control increases dramatically, along with your ability to see more concrete shapes (walls, "avatars," buildings) - a product of time spent in the mnemonos with Duck, Perry, and Orion.