Work Directory in Tomcat

[Hari Venkatesan]

Can anybody explain the usage of work Directory in Tomcat. I see that
the compiled versions of the JSP's are being stored here. Does the JSP
get loaded from here upon actual execution? IF so what happens if there
is a change in the JSP. 
 
One strange problem is every time I change a JSP, I had to go and remove
the JSP classes from the work directory before I could get to see the
changed version. Any Ideas?
 
Hari