Within OpenVMS, when you specify a file name without a device,
directory, or file type, OpenVMS usually attempts a logical
name translation of the file name before it applies device,
directory, or file type defaults. However, if you specify a
device, directory, or file type, OpenVMS does not attempt a
logical name translation.
Using the /TRANSLATE qualifier forces INSTALL to attempt a
logical name translation even if a device, directory, or file
type are specified.