In Fortran–90, this turns on free-form syntax and sets the continuation character to be the ampersand. For example,
-n9[-n&]
@
@a
program main
x = &
y
end
For Fortran-90, free-form syntax continued by the ampersand is Fweb's default, so one probably will not need to use ‘-n&’ explicitly.
See also -n\.