cleaned up bird_ppi.pro. Also, I'm now using the environment variable IDL_ENRAM_CLUTTER_SENSITIVITY instead of a hardcoded path
cleaned up bird_ppi.pro. Also, I'm now using the environment variable IDL_ENRAM_CLUTTER_SENSITIVITY instead of a hardcoded path

NLeSC/enram,NLeSC/enram,NLeSC/enram,NLeSC/enram