re: Defs (new context defs, I forgot the orig title)

OK, here's the zipped file of examples. One is for a large orchestra with the new contexts "Orchestra", "SquareStaff" and two kind of marklines, the other is an old test of my harmony exercise. But please compile and check the orchestra template. I contacted a composer to ask for orchestration guide, and he said there are two long thick brackets instead of one before (or one before, one after--I don't know what he means) the system. What's more, the spacing is good when doing my own music, but there's an error for this template. Why? Is there anything wrong with my code?
BTW, I also included my original big def file. If you find anything useful, please add them.

From:	胡Hu Haipeng
Subject:	re: Defs (new context defs, I forgot the orig title)
Date:	Wed, 5 Nov 2008 12:14:43 +0800 (CST)