How does the preface distinguish Shri Sai Satcharita from other types of poetic books?

The preface in Chapter 0 explains that poetic books can be natural, artificial, or graceful (Prasadik). It clarifies that a book written solely on intelligence and scholarship may be good but lacks the eternal quality of an inspired, grace-filled work. Shri Sai Satcharita is explicitly identified as a 'grace-filled (Prasad-janya)' book. This quality, born from Guru's grace rather than mere intellect, is what allows it to leave a lasting impression on seekers and inspire faith, ensuring it will be studied daily through Parayans and Saptahs.