Learning on Tisha B'Av

The rabbis established limits to what Biblical and/or Rabbinic texts we're allowed to study on Tisha B'Av, lest we derive too much pleasure from our studies. (You can read about those limits, and other information about Tisha B'Av, here.) Me, I spent some time cracking my teeth trying to learn Psalm 137, Al Naharot Bavel--By the Waters of Babylon, which seemed an appropriately mournful thing to study. You can find it here, though, in the Hebrew, most of the punctuation is in the wrong place.