3. The method of claim 2 , wherein the identifying of at least one boundary comprises determining a justified side of the text block to which the text lines are justified and an unjustified side of the text block opposite the justified side.
3. The method of claim 2 , wherein the identifying of at least one boundary comprises determining a justified side of the text block to which the text lines are justified and an unjustified side of the text block opposite the justified side. 4. The method of claim 3 , wherein the identifying of at least one boundary comprises identifying a candidate boundary aligned with a maximal edge of ones of the bounding rectangles on the unjustified side of the text block.