There's a description below each image if you
scroll down a bit. You can click on the
control buttons
beneath each image to
step through them. If an information button
is present, you can click on it for a
text description of the image and/or
technical information on its creation. You
can press
Enter on each page to step through
the images. If you have JavaScript
enabled (the default for most browsers), you
can use the Left and Right
Arrow keys to move back and forth
through the images. You can use the Backspace key
to backtrack through the images you’ve visited.
Some image pages include
additional image (subgalleries) that you can view; in
these cases, a down arrow appears amng
the control buttons beneath the omage.
Within the extra images, an up arrow returns you to the main image. With
JavaScript enabled, you can also use the
Page Up and Page Down keys.
You can click on the full screen icon
to open the image by itself in a separate window/tab.