The Toolbar gives you a single-click way to perform several common actions. It can be customized by control-clicking
anywhere in the toolbar to bring up a contextual menu, by clicking on the Customize button, or choosing Customize Toolbar... from the World menu; you can switch the toolbar format, remove items that you control-click
on, customize the toolbar, or reset the toolbar to defaults. Choose Customize Toolbar... to see the following sheet:
A quick description of the various items:
Check the Use small icons checkbox to use small icons in the toolbar instead of the normal-sized ones.