You must use -xl[d] to access the following features:
Unformatted record size in words rather than bytes (-xl)
VMS-style logical file names (-xl)
Quote (") character introducing octal constants (-xl)
Backslash (\) as ordinary character within character constants (-xl)
Nonstandard form of the PARAMETER statement (-xl)
Debugging lines as comment lines or FORTRAN statements (-xld)
Align structures as in VMS FORTRAN (-xl)