This option provides a method for restoring the description of the world coordinate system mapping from a formatted file. Typically this file will have been created previously by the 'Save world coordinate mapping' option (Y). Note that DigImage automatically loads all this information from a binary file CalWorld.DIG in the current directory when DigImage is started; if the file can not be found, then DigImage assumes identity mappings. The use of this option will override these default values.