If the corresponding catchment offers site pictures, the mouse pointer will change its shape and the site pictures theme will become active. Locations at which pictures have been taken are marked with large dots. Clicking on a dot will launch a window showing the picture of the site in question (this dialog is a standard ARCVIEW built-in dialog).
Please note that the images are always scaled (see check box at the bottom). This means that the displayed ratio between width and height may not be the real one.
The reason why scaling is switched on by default is a problem observed on some PCs with a small desktop size. A picture exceeding the desktop size leads to the problem that the close window button is inaccessible to the mouse.