Is there a font missing or something? When I try to read the paper, every instruction dependency is displayed as x ? y, with a question mark between each object, even when the author implies there is some difference between x ? y and x ? y. I'm sure there is supposed to be some other characters there, because without them the paper makes no sense.
Perhaps it's something that only shows up properly on Windows computers?
Perhaps it's something that only shows up properly on Windows computers?