Adobe Illustrator CS4 - Manual (Page 298)

291 USING ADOBE ILLUSTRATOR CS4
Importing, exporting, and saving
• Inserting, Deleting, And Rotating Pages Lets users insert, delete, and rotate pages, and create bookmarks and
thumbnails. This option is only available for high (128-bit RC4 or AES) encryption.
• Filling In Form Fields, And Signing Lets users fill in forms and add digital signatures. This option doesn’t allow
them to add comments or create form fields. This option is only available for high (128-bit RC4 or AES) encryption.
• Commenting, Filling In Form Fields, And Signing Lets users add comments and digital signatures, and fill in forms.
This option doesn’t allow users to move page objects or create form fields.
• Any Except Extracting Of Pages Lets users edit the document, create and fill in form fields, and add comments and
digital signatures.
Enable Copying of Text, Images, And Other Content Lets users to select and copy the contents of a PDF.
Enable Text Access For Screen Reader Devices For The Visually Impaired Lets visually impaired users read the
document with screen readers, but doesn’t allow users to copy or extract the document’s contents. This option is
available only for high (128-bit RC4 or AES) encryption.
Enable Plaintext Metadata Allows users to copy and extract content from the PDF. This option is only available when
Compatibility is set to Acrobat 6 or later. Selecting this option allows storage/search systems and search engines to
access metadata stored in the document.
File information and metadata
About metadata
Metadata is a set of standardized information about a file, such as author name, resolution, color space, copyright, and
keywords applied to it. For example, most digital cameras attach some basic information to an image file, such as
height, width, file format, and time the image was taken. You can use metadata to streamline your workflow and
organize your files.
About the XMP standard
Metadata information is stored using the Extensible Metadata Platform (XMP) standard, on which Adobe Bridge,
Adobe Illustrator, Adobe InDesign, and Adobe Photoshop are built. Adjustments made to images with Photoshop®
Camera Raw are stored as XMP metadata. XMP is built on XML, and in most cases the metadata is stored in the file.
If it isn’t possible to store the information in the file, metadata is stored in a separate file called a sidecar file. XMP
facilitates the exchange of metadata between Adobe applications and across publishing workflows. For example, you
can save metadata from one file as a template, and then import the metadata into other files.
Metadata that is stored in other formats, such as Exif, IPTC (IIM), GPS, and TIFF, is synchronized and described with
XMP so that it can be more easily viewed and managed. Other applications and features (for example, Adobe Version
Cue) also use XMP to communicate and store information such as version comments, which you can search using
Adobe Bridge.
In most cases, the metadata remains with the file even when the file format changes (for example, from PSD to JPG).
Metadata also remains when files are placed in an Adobe document or project.
If you’re a C++ or Java developer, use the XMP Toolkit SDK to customize the processing and exchange of metadata.
If you’re an Adobe Flash or Flex developer, use the XMP File Info SDK to customize the File Info dialog box. For more
information, visit the Adobe website.