An very important software:rasmol

Yesterday,I bought a book about Monte Carlo method written by Jun S. Liu who is a statistician in Havard.(书名叫做科学计算中的蒙特卡落策略，写的相当好）。
In his book,he use the rasmol software to show the structure of carbon dioxide.
So I just search google to find whatever rasmol is,now I know it's a very useful tool to discover the structure of protein.
The two pictures above is output by rasmol which reads some pdb format file.
到现在为止我才发现分子结构有这么好玩的东西，真是相见恨晚呀！呵呵。