Navigation pane: Shows or hides the navigation pane
Zoom: When you view an image in the Preview it is, by default, displayed at normal size. You can adjust the size using zoom commands with the several manual and automatic zooming adjustments available to you.
Icon frames: Selects a specified frame from a icon.
Large icon: A large icon and the file name is displayed. Icons are displayed in multiple columns
Small icon: A a small icon with the file name displayed to the right of the icon. Icons are displayed in multiple columns.
List: A small icon with the file name displayed to the right of the icon. Icons are displayed in a list.
Details: Same as List mode but with columns of detailed information; including Size, Type, Date, Image Properties, and Description.
Refresh: Refreshes the current folder
View in full screen: In full-screen mode, the window borders, menu bar, status bar and tool bar are hidden and the window fills the screen so that only the image is visible.