Resource not found
The Server Variables/Messages.../No such file variable contains the error page that will be returned if Challenger could not find a page. It can be customized for each web site to contain information guiding the user to the information she most likely wanted.

FTP Welcome
The Server Variables/Messages.../FTP Welcome variable contains the welcome message that will be shown when you connect to an FTP port.

For Developers
The Global Variables/Show the internals variable control how detailed the Internal server error message should be. This is the message Challenger gives when an error occurred while the request was processed. If set to yes a Pike backtrace will be shown, something which greatly facilitates debugging for a developer. On the other hand, the message might seem a bit confusing or intimidating to a regular user, the option is mainly intended to for use on development sites.