Aliases and Paths
The page allows you to create aliases that apply when the FTP client user uses the cd command. The first table allows you to map cd aliases to absolute directory paths. For example, if you created an alias for foo for /usr/local/foo, then typing cd foo into an FTP client would take the user to the directory /usr/local/foo.

The second text box is for enter directories to be searched when a relative cd is entered. For example, if directory /usr/local was in the search path and the user entered cd bin, he would be taken to /usr/local/bin (assuming there was no directory called bin in the current directory and no alias for bin).