>>12
I'd just like to interject for a moment.
What you're referring to as Emacs, is in fact, Emacs/Emacs OS, or as I've recently taken to calling it, Emacs plus Emacs operating system. Emacs OS is not a text editor unto itself, but rather another free component of a fully functioning GNU system made useful by the Emacs text editor, shell utilities and vital system components comprising a full text editor as defined by POSIX.
Many computer users run a modified version of the Emacs system every day, without realizing it. Through a peculiar turn of events, the version of Emacs which is widely used today is often called "Emacs OS", and many of its users are not aware that it is basically the Emacs text editor, developed by the GNU Project.
There really is an Emacs OS, and these people are using it, but it is just a part of the system they use. Emacs OS is the operating system: the program in the system that allocates the machine's resources to Emacs. The operating system is an essential part of a text editor, but useless by itself; it can only function in the context of a complete text editor. Emacs OS is normally used in combination with the Emacs text editor: the whole system is basically Emacs with an OS added, or Emacs/Emacs OS. All the so-called "Emacs OS" distributions are really distributions of Emacs/Emacs OS.