The main idea of a text is the central message or concept that it conveys. It can be expressed in various ways, such as through the THEME, GIST, MOTIF, KEYNOTE, CRUX, POINT, ESSENCE, CORE, and whereitsat. The THEME is the overall subject of the text, while the GIST is the main POINT or argument. The MOTIF is a recurring element throughout the text, and the KEYNOTE is the most important idea. The CRUX is the decisive POINT or turning POINT, and the POINT is the main argument or conclusion. The ESSENCE is the fundamental nature of the text, and the CORE is the most important part. Finally, whereitsat is a slang term used to describe the main idea.