Adobe ACROBAT 9 Extended, Руководство пользователя

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C h a p t e r f o u r t e e n Using Drawings, Maps, and Layers
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To see what a layer contains, right-click (Control-click) it in the Layers
pane and choose Layer Properties to open the dialog (also shown in
Figure 104a). The Layer Properties dialog lists information about the
layer, including its original name, visibility, print status, and export
status.
Layer groups hold multiple layers, and can be collapsed or expanded
in the Layers pane. Programs such as Visio and AutoCAD can produce
layer groups, where a number of layers are nested within a heading
(
Figure 104b
).
Figure 104b Layers may be
organized in groups before
converting to PDF.
Use the commands in the Options menu to rename, flatten, rearrange,
merge, and lock/unlock layers.
Changing Layers
As with other documents,
you may be able to make
changes to the content
depending on the rights
granted by the document’s
author. If a layered document
doesn’t contain security, you
can add comments to it, print
it, or export it in another file
format from Acrobat.
Keep in mind that settings
applied to the original lay-
ered document cannot be
changed. For example, if a
document layer is assigned
the Prints When Visible
setting, only a blank page
prints unless the layer’s eye
icon is toggled to visible.
Showing the
Layers Pane
To specify that the document
appear with the Layers
pane and Document pane
automatically, choose File >
Properties and select the Initial
View tab; choose Layers Panel
and Page from the Navigation
pop-up menu. Refer to the
sidebar “Crafting Your Readers’
Viewing Experience—Part 1:
Navigation” in #31, “Finding
Information about Your
Document.”
Different Types of Layers
What you see in the Layers pane depends on how the original document was
constructed and converted. In some cases, a document is converted with
preserved layers. In other cases, the document layers may be flattened or
locked. In a flattened document, you see a single layer as in a regular PDF
document. A locked document, on the other hand, displays the layers
individually, but they can’t be edited in any way.
From the Library of Daniel Dadian