27 May
2009
27 May
'09
10:27 p.m.
Thank you for the checking. I typed the text and run it. At this time, it worked. There may be a garbage attached during the process of "copy and paste". By the way, is it possible to modify this code to use circled character a, b, c, ...? By using the command \sym{symbol}, I may use them, but is there a automatic way of doing that? Thank you again. Best regards, Dalyoug