I just installed gimp2, version 2.8.18. How do I run it? I know it needs X11. I did a straight "port install gimp2" -- do I need to install X11 separately? I the past, I installed XQuartz. Is this still a good solution? I see the gimp executable in /opt/local/bin, but OS X doesn't seem to want to run it. This is on Sierra. Cheers, Dave