The rules for the lines formatting are different, but lucky you can write code in the "intersection format" that can be read by both http://fortranwiki.org/fortran/show/Continuation+lines
If useful if your coworkers are stuck to a old semi unknown machine and want to mix the new code with the old code and run it there too.
That's very impressive! I assumed the compatibility difference was akin to what Perl 6 is to Perl 5- -- that is, not compatible at all.