By v'zos hatorah (i.e hagbah) I have seen people point their pinky at the sefer torah.
Is this a minhag or did someone just make it up? Where did this minhag come from?
Does the Shulchan Aruch, Kitzur Shulchan Aruch or Mishnah Berurah talk about it?
What should an Ashkenazi, Sefardi, or Yeki do?