Adobe 65023809 - Creative Suite 4 Master Collection Printing Manual page 115

Importing a PDF into another PDF as a layer
1. Open the Layers Navigation panel (View > Navigation Panels > Layers).
2. In the Layers panel, click on the Options menu pull-down (
Layer. Name the layer, and choose options for position, scale, opacity — even position the
layer behind the existing contents.
Using Other Applications to Edit PDF files
Using the TouchUp tools is the recommended method for editing content in a PDF. Still, be cau-
tious about accidentally modifying content, and carefully examine edited PDFs to ensure that no
unintended changes have occurred.
Adobe does not recommend that you attempt to edit PDFs outside of Acrobat, however. For
example, while Illustrator will open a PDF, it is intended to open only PDFs that were
created by Illustrator. PDFs created by other applications—even Adobe InDesign—are not
intended to be edited in Illustrator. Font embedding may be damaged, content may become cor-
rupted, and there is no guarantee that such edits won't greatly impair file integrity. It's still best
to return to the originating application, perform the necessary edits there, and generate a new,
corrected PDF.
Convert Colors
Using the Convert Colors feature, you can convert color objects in a PDF document to CMYK or
another color space. Acrobat uses the source color spaces of objects in the document to deter-
mine what (if any) color conversion is required. Acrobat manages the colors using embedded
profiles (if they exist) or default or user-defined color spaces. You can convert the colors of a
single page, a range of pages, or an entire document.
Note: To convert only the color of a selected object, use the TouchUp Object tool.
The Convert Colors function in Acrobat 9 Pro includes a revamped interface, access to the Ink
Manager (and the ability to permanently process Ink Manager changes), as well as several new
options:
• Preserve Black: If R, G, and B values are the same, this options will convert to an
equivalent percentage of process black. This is especially useful for handling PDFs
from Office files intended for high-end printing, to avoid multi-color output of text
and other elements intended to print as black.
• Promote Gray To CMYK Black: Converts device gray to CMYK, not to rich black.
), and choose Import as
Importing a PDF as a Layer
Select another PDF to import as a layer, and choose
scaling, stacking order, position, and opacity options .
Adobe Creative Suite 4 Printing Guide 113