It also contains a scripted keybind (default 'R') to exit terminals, since the game has a button for gamepad, but for KB/mouse you can only click the red button, there's no keybind.
This is has the 'Extras' game mode HUD from the Fallout 3 version combined with the FNV version menus (companion wheel menu, trait menu, recipe menu, etc), along with bugfixes.