The toolbar contains a number of buttons divided into a number of optional sections. The Toolbar submenu on the View menu allows you to switch on or off the sections you require. Some of the sections are modal and are greyed out in edit or debug modes. The buttons are tooltipped so their function can be discovered by hovering the mouse over the unknown button.
The sections are listed below. Hover the mouse over any button to see more about that option.
This shows options from the file menu.
This shows clipboard options for cutting and pasting text from the editor.
This shows options from the search and object menus
This shows options from the debugger menu
This shows options from the view menu. Clicking the button will make the window appear.
This allows you to choose the scene for the current window.
This is a combo control. You can enter text here to be actioned. The drop down list acts a a history of text previously entered.