Apple Macintosh PhotoFlash - Manual (Page 22)

2 Hold down the Shift key (or the x key) and click the other thumbnails you want to select.
While you’re holding down the Shift key, each unselected new thumbnail
you click becomes selected, and previously selected thumbnails remain
selected. (Each selected thumbnail you click becomes unselected.) Only
thumbnails you click are added to the selection, even if they are separated by
other thumbnails.
Holding down the x key has the same effect as holding down the Shift key
when you’re selecting thumbnails.
Selecting a range of thumbnails
To select a continuous range of thumbnails, follow these steps:
1 Click the thumbnail at one end of the range of thumbnails you want to select.
2 Hold down the Option key and click the thumbnail at the other end of the range you want
to select.
11 Using Catalogs
Shift-click
additional
thumbnails to
select them.
Option-click a
second thumbnail
to select a range.