Apple 145B Working with menus, Using the outline form in list views, Menu bar you, From here

Using the outline form in list views

Any list view you choose from the View menu (that is, any view except the icon and small icon views) shows the contents of the active window in outline form. You can see the contents of a folder without opening the folder in its own window.

Working with menus

Macintosh menus come in two types: pull-down menus and pop-up menus. The menus in the menu bar are pull-down menus.

Open folder (with contents indented below)

Open folder inside another folder (with contents indented below)

A downward-pointing triangle indicates that the folder’s contents are displayed; a right-pointing triangle indicates that the folder’s contents are hidden.

Click the triangle next to a folder name to display or hide the folder’s contents in the active window. If you double-click a folder, it opens in its own window, and its outline view closes.

vShortcuts: When a folder is selected in an outline view, pressing x–Right Arrow displays its contents and x–Left Arrow hides its contents. v

Menu bar (you
pull down menus
from here)				Menu titles
	hh	hh
			h

Dimmed command (not available)

The Help menu, which you use to display information about items on the screen

The Application

h menu, which shows the programs that are currently open

Menu commands affect whatever you’ve selected— in this case, “Macintosh HD.”

242 Quick Reference