The Customize User Interface dialog lets you create an entirely customized user interface, including shortcuts, quad menus, menus, toolbars, and colors. You can also add commands and macro scripts by selecting either a text or icon button to represent the command or script on the toolbar.
Most commands in the 3ds Max interface appear in this dialog as actions. An action is simply a command that you can assign to a keyboard shortcut, toolbar, quad menu, or menu. The Keyboard, Toolbars, Quads, and Menus panels of this dialog show lists of actions that you can assign. The lists on the Colors panel contain UI elements instead.
These are the file formats: