The text mentions Baba slept on a strange plank. Can you describe this plank and what it suggests about his nature?

Chapter 10 of the Shri Sai Satcharitra describes in detail Baba's unique sleeping arrangement. He would sleep on a narrow wooden plank, just four cubits long and one span (about nine inches) wide, which was suspended from the rafters like a swing using old rags. As mentioned in the chapter, lamps would burn at his head and feet while he rested. The text highlights that his movements onto and off this precarious plank were imperceptible to anyone, suggesting his great divine powers, or Siddhis. The chapter posits that the plank itself was merely for name’s sake, as his ability to become minute ('Anima'), like a fly or ant, made such movements easy for him.