The document discusses different text structures that authors use to organize information in writing. It describes chronological order as presenting events or steps in the order they occurred or will occur. Compare and contrast structures show how two or more things are similar or different. Cause and effect structures explain how one event causes another to happen as a result. Problem and solution structures identify an issue and then offer a way to address it. Keywords like first, then, while, and as a result help readers identify the structure being used.