Apple Macintosh PhotoFlash - Manual (Page 60)

You can choose a different Selection tool if you wish.
When you release the mouse button and x key, PhotoFlash subtracts from the
overall selection the area of the second selection that overlaps the first.
3 Repeat step 2 as many times as you need to.
A moving dashed line surrounds the currently selected area. If you use
an Action tool anywhere within the selected area, the action affects the
whole selection.
Selecting an entire image
To select an entire image, choose Select All from the Edit menu or press x-A.
When the entire image is selected, moving dashed lines surround it.
50 Chapter 3