The Show UI submenu lets you add or remove UI (user interface) elements from the workspace, so that you can customize your screen as you work. You can turn these elements on and off as you need by selecting them from the menu, maximizing the efficiency of your workspace. The settings are stored in the maxstart.cui file, so they will remain after you shut down and restart 3ds Max.
When you choose a UI element from the Show UI submenu, it will be displayed or hidden, depending on its previous state. If it was hidden when you selected it from the menu, it will be displayed. If it was displayed when you selected it from the menu, it will be hidden. The Show UI menu displays a check mark next to the UI element when it is currently being displayed.
Keyboard shortcuts for turning on and off UI elements are displayed next to their corresponding UI elements in the Show UI menu.
You can use the Show UI menu to hide or display the following UI elements:
Floating Toolbars (displays Axis Constraints Toolbar, Layers Toolbar, and Extras Toolbar)