Toolbars - this list allows you to show or hide the available toolbars. Clear the checkmark to the left of the bar name to hide the bar, or check the box to display it. Note that clearing the mark doesn't delete the bar, or any changes you've made to it, it simply instructs the program to not display it. For example, you might want to maximize your available screen real estate by hiding the bar temporarily, or you may not like toolbars at all.

There is more help...

To read more help about each control in any dialog box, please click the  button at top right corner. The mouse cursor changes then to - now click any other item in that box to find out what exactly it does.