Caveat: *don't* change the distributed vim70/filetype.vim or
vim70/scripts.vim. If you do, your emendations will no
longer be working and you'll make yourself a lot of irritating
work trying to find out why.
I can speak from experience on this matter...In my naive early
days of using Vim6.0, I modified these files. It held me back
from upgrading for a couple years because all of my changes would
be lost. I finally bit the bullet and upgraded to a more recent
version (gotta love reformatting to make Windows happy). By now
adhering to the standards Dr. Chip suggests, I've been able to
automatically upgrade several times with no impact in my personal
preferences.
-tim
