The support folder stores Rhino render content libraries (materials, environments, and textures) and plug-in information.
The path of the support folder:
~/Library/Application Support/McNeel/Rhinoceros/8.0
or /Users/<yourname>/Library/Application Support/McNeel/Rhinoceros/8.0
* "Library" is a hidden folder.
The setting file stores the settings of the Rhino app and commands.
The path of the setting file:
~/Library/Preferences/com.mcneel.rhinoceros.8.plist
or /Users/<yourname>/Library/Preferences/com.mcneel.rhinoceros.8.plist
* "Library" is a hidden folder.