SC29: Test syntax checking of typesetter pragma. 1. Test not three arguments. @p typesetter @p typesetter = @p typesetter = xxx yyy 2. Test second argument not "=". @p typesetter x sloth 3. Test third argument is not legal. @p typesetter = sloth 4. Test third argument is none. @p typesetter = none 5. Test third argument is tex. 6. Test pragma opposes earlier pragma. @p typesetter = tex 7. Test pragma does not oppose earlier pragma. @p typesetter = none