Chapter 10 mentions Sai Baba possessing 'Siddhis'. Can you explain this in the context of his sleeping plank and imperceptible movements?

Chapter 10 explains that Sai Baba's ability to sleep on a narrow plank suspended by rags was a demonstration of His great Siddhis, or divine powers. The text questions how the plank could possibly support His weight, concluding that the plank was "merely for name’s sake" because great Siddhis resided within Him. To illustrate this, Chapter 10 specifically mentions the power of 'Anima,' which is the ability to become minute. It suggests that with such a power, Baba could easily move imperceptibly in the forms of flies, insects, or ants. This power explains how His movements of getting onto and off the plank were never witnessed by anyone.