[Building Sakai] sakai.properties and tomcat

[50600822 at stu.hcmut.edu.vn]

Hi guys
     I have some questions, I tried but couldn't find the answer. If somebody give me a hint or point me to the right link or give me some kind of keyword I would be very thankful.
- First question: I've just realized that c:\tomcat\sakai\sakai.properties is kind of look like a configuraton file for Hibernate. But it sit outside every application and even out of the tomcat\webapp. Can somebody tell me how that everytime tomcat startup, the sakai.properties is read and all application can retrive its info(I only know that tomcat can configure shared resouces throught JNDI but this is not the case...).
- Second question: I just realize there's a folder name component in tomcat, yet I don't know what it does, can somebody give me a hint.

                          Thanks in advance