To check the flow of the article, click the Hand pointer with the arrow pointing
down from a crossbar somewhere in the text of the first article box, and then
continue to click the Hand pointer (which loses the crossbar while retaining
the downward-pointing arrow) to view in succession each portion of every
article box in the article. Acrobat lets you know when you’ve reached the end
of the article (the last visible portion of the last article box) by adding a cross-
bar at the bottom of the downward-pointing arrow on the Hand pointer. When
you click this Hand pointer, Acrobat returns you to the top of the article, and
the page resumes the magnification setting currently in effect in the Document
window (as shown in the Magnification text box on the Zoom toolbar).
Editing Document Layers in a PDF File
Now that Acrobat 6 supports document layers created in programs such as
AutoCAD, Microsoft Visio, and Microsoft Project, you may one day find your-
self staring at a PDF document with the new Layers palette overflowing with
layers, just like the one shown in Figure 10-12. Fortunately, Acrobat makes it a
breeze to select, move, edit, delete, and even merge and flatten document
layers. Note that you can view document layers in either the Standard or
Professional versions of Acrobat 6. If you want to edit document layers, you
must have Acrobat 6 Professional version.
The good news is that Acrobat treats visible text and graphic objects on
document layers in exactly the same way as regular objects in PDF docu-
ments. This means that even though a portion or even a whole object may
reside on different document layers, Acrobat views the object as a single item
for selection and editing. Because of this seamless view of document layers,
you can apply the same tools and editing techniques to document layer
objects that have been described in previous sections of this chapter. For
example, you can use the TouchUp Object tool to select, move, or edit a layer
object. Figure 10-12 shows the selection of all the visible chair components in
the drawing using TouchUp Object tool, even though some of the furniture is
drawn on different layers.
You might occasionally encounter a locked layer in a PDF document. You’ll
know because a padlock icon appears next to a layers name in the Layers
palette in the Navigation pane. These layers were locked by the author of the
original AutoCAD, Visio, or Project document and are visible for informational
purposes only. You can edit the Layer name in these cases by right-clicking
the layer in the Layers palette and choosing Properties on the context menu.
In the Layer Properties dialog box, enter a new name in the Layer Name text
box and click OK.
Chapter 10: Editing PDF Files