Apple Aperture 2 - Manual (Page 498)

498 Part IV Distribution and Backup
6 Add or remove name elements by dragging the elements where you want them and,
when appropriate, entering relevant naming information in the fields provided. You can
also enter characters directly in the Format field.
As you select or deselect name elements, the Example field automatically updates.
7 When you’re satisfied with the new name format, click OK.
The new name format appears in the Name Format pop-up menu.
When exporting images for specific uses, such as for use on websites, you may need to
use filenames without spaces so that the filenames are compatible with the intended
application or website. Aperture adds spaces to filenames depending on the name
format you use. You can easily modify name formats to remove spaces from filenames.
Add name elements by
dragging them to the
Format field.
Name elements appear
here. Remove a name
element by selecting it
and pressing Delete.
The name format
example automatically
updates as you change
the name elements.