These notes consisted of 30,000 possible interpretations from Qur'anic verses. Later after the revolution, for the sole purpose of accomplishing this project, a center titled "Quranic culture and science" (Markaz-e-Farhang va Maaref-e-Qur'an) was established in which researchers could develop the commentary. The researchers in a group of 5 investigated each interpretation and approved them in a group of 3.