In my document (due to combind both Chinese and English), all (, ), [, ], etc., are all too low. Is it posibble to raise all (, ), [, ], or any characters user defines to desire height? (for ex. If I want to raise all 'z' for 3pt?)
Thank you so much!

ex. – Christian Lindig Mar 20 '11 at 06:57ps. In some way, I prefer to use pt than em/ex. In topography's book's discussing, most typesetting problem cannot be solved by scaling/proportional calculating. Before reading such books, I use em/ex, etc. But after reading some, I use pt now even though it is more complicated than by using em/ex.
Thank you for your reply so much. Maybe using ex is a good idea in this kind of situation. :-)
– Kuang-Li Huang Mar 20 '11 at 07:45xeCJK. I'm sorry I've no much time for this. See also http://bbs.ctex.org/viewthread.php?tid=45054&page=3&fromuid=56635#pid400524 – Leo Liu Mar 20 '11 at 08:21