The file system path for which files will be displayed in
the FileViewer table. This path will always read as a full
pathname starting with the '/' character.
Setting this variable will specify a new directory for which
files will be displayed. The path specified must be the full
path, relative setting of path does not work. Only paths with
invalid characters in them will cause an error, paths specifying
non-existant directories will be accepted, but no files will be
displayed in the File Viewer table in this case.