Returns to the beginning of the chapter and displays an overview of a stage in the atlas.
Provides a menu for accessing all parts of the program and for quitting the program.

Left-click (PageUp, LeftCursor) to go back one page; right-click (Shift+PageUp, Shift+RightCursor) to return the page you last visited.
Left-click to scroll down one page (PageDown, RightCursor); right-click to list all pages that you have visited (Shift+PageDown, Shift+RightCursor).

Magnifies sections of an image.

Displays individual structure names within an image.

Displays a list of all structure names within an image.

Information mode: all known structures within each image of the atlas are named.

Test mode: (in the atlas domain) a list of the structures within each image is given. Each structure within the image is lit up. You can test your knowledge of structure names by left-clicking to display the corresponding list of structures. You then right-click to choose the correct structure name from the list. If you have chosen correctly, the structure is ticked off in the list and it is no longer lit up in the image. Click on "reset" to produce a new list of structures for the same image. Click on "solutions" for the answers, which appear in a window above the list of structures.

Learning mode: a selection of structures within each image is named (turn the learning mode on in "Options").