Railo server vars
I've been working with Railo extensions recently and came across two helpful server variables find out where the context location you are in or where the server is installed.
The web context directory
<cfdump var="#expandPath('{railo-web-directory}')#">
The Railo server directory
<cfdump var="#expandPath('{railo-server}')#"><cfdump var="#expandPath('{railo-server-directory}')#">