$DefaultDirectory
The $DefaultDirectory directive sets the default directory that is used when opening an .EES file or when saving an .EES file that has not been previously saved. It is also used with the $Import, $Export, $ExportPlot and $Save directives when the file name does not include the path. The format of the $DefaultDirectory directive is
$DefaultDirectory DirName
DirName must be a string constant or previously-defined string variable that contains the name of an existing directory.