The world was created with the letter heh which reflects the opportunity for free will and also for doing repentance. The world to come was created with a yud and the gemara explains why. In what situations can a sefer torah be fixed? What are the margins? Spacing? How many columns on each piece of parchment? What if one errs and omits God’s name? Can it be fixed? Several halachot are brought in which Rabbi Shimon Shezuri finds halachic solutions to problematic situations.