Topics | List window
The QuickView™ menu
The QuickView menu provides a quick way to view the contents of volumes and a number of standard folders by choosing the item whose contents you which to view. The menu contains local volumes, specific folders, and folder types which can represent multiple folders when there are multiple folders of the same kind for different “domains.”
For example, there is a system Preferences folder:
/Library/Preferences
and the Preferences folder in your home folder:
~/Library/Preferences

If the item chosen from the QuickView menu represents a single directory, its contents are displayed in a List window.

If the item chosen represents multiple folders, such as Preferences, the folders themselves are displayed in a List window, where you can expand them to view their contents.
The QuickView menu
mounted volumes
The first group of items in the QuickView menu are currently mounted volumes.

your home folder
If the home folder item itself is chosen, its contents are displayed in a List window. The items in the submenu are folders in your home folder. Choose any of them to have its contents displayed in a List window.

Application Support
Applications can use the Application Support to store any persistent data they wish.
Caches
Cache folders are used by applications to store information and data generated so it can be used again on a short term basis without having to recreate it.
Fonts
Displays the Fonts folders.
Library
Lists the system and user Library folders.
Logs
Displays Log folders in Library folders as well as the log folder at “/private/var/log.”
PreferencePanes
Lists the folders containing Preference Panes.
Preferences
Preferences folders contain files created by applications and various components of Mac OS X to record state information and preferences you’ve set.
Trash Folders
Every mounted volume contains a Trash folder assigned to each user. When viewing the contents of the Trash in Finder what is shown is the collection of all items in each of these Trash folders.

Crash Log Folders
Prior to Mac OS X 10.6, crash logs were written to a folder named CrashReporter. Starting in Mac OS X 10.6, crash logs are written to a new folder named DiagnosticReports, but the CrashReporter folder still exists and is populated with aliases to the actual crash reports created in DiagnosticReports. Both folders are shown in response to this command.
The List window Cleaning your file system