A1L30R200 these are the signs of the book, and a clear Quran.
Translation endnotes
[15:1] A1L30R200. These letters/ numbers play an important role in the mathematical system of the Quran based on code 19. See 74:1-56; 1:1; 2:1; 13:38; 27:82; 38:1-8; 40:28-38; 46:10; 72:28. Quran's divine nature, authenticity and the promise regarding the protection of its message (zikr) have been supported by the mathematical structure of the Quran discovered in 1974. See 74:1-56; 1:1; 2:1; 13:38; 27:82; 38:1-8; 40:28-38; 46:10; 72:28.