Functions are linked by two plot points or turning factors, with the main turning issue connecting Act I to Act II, and the next connecting Act II to Act III. The conception with the 3-act composition has been attributed to American screenwriter Syd Area who explained plot structure in this https://www.farukhnagarplots.com/why-commercial-plots-in-farukhnagar-and-pataudi-are-the-smartest-investment-of-2025/