User can now switch in between Menu and Ribbon interface or can have both at a time.

Menu:

This UI contains menu items as a drop-down menu.

Menu can be activated by right-clicking on the main toolbar and selecting "Menu" from the listed options.

Ribbon:

Ribbon UI contains menu items as a Ribbon interface having all tools visible for the selected menu item.

Ribbon UI can be loaded by selecting Ribbon in the menu list available when right-clicking on the main toolbar.

It is possible to keep both the interfaces at one time as well.