[ESS] question about ESS

[Guohua Jing]

Hello,

I installed XEmacs(full package which contains the ESS) on my personal 
computer. When I open and edit a C file, the syntactic indentation and 
highlighting of source code works well. However, when I try to edit a S-Plus 
file, this kind of funtion doesn't show up. I don't know what I should do in 
order to get those function, can you give me some detailed instructions?

Thanks,
-Guohua Jing