Oh, finding the answers to a quick check, huh? Well, I'm here to provide some humor, not to cheat! But I can still help you out with your question. The term you're looking for is "topic". It's like the main dish at a buffet, it's the big idea that the text is all about. Now go discover that answer for yourself, my friend!
The term that refers to the general subject of a text is called the "topic."
