file.openFolder (file.getSystemFolderPath ()) //open the operating system folder » true
file.openFolder ("System:System Folder:Finder") //Mac-formatted path » false
file.openFolder ("C:\\Winnt\\Explorer.exe") //Windows-formatted path » false
If the folder at path is already open, this verb brings it to the front.
On the Mac, this action automatically brings the Finder to the front.