The PDF Options tab allows you to set the PDF document restrictions.

PDF documents can be encrypted to protect their contents from unauthorized access. An encrypted PDF document has two passwords: an owner password and a user password. The PDF document also specifies operations that should be restricted even when the PDF document is decrypted. When opening an encrypted PDF document, Adobe's Acrobat Reader prompts for a password, if one is required. When the correct user password is supplied, the PDF document is opened and decrypted but operations are restricted; when the owner password is supplied, all operations are allowed. The owner password is required to change these passwords and restrictions.  A PDF document is encrypted whenever a user or owner password or restrictions are supplied for the PDF document. However, a user is prompted for a password on opening a PDF document only if the PDF document has a user password.

Owner Password

Specify the password required to perform owner functions for the PDF document (case sensitive). If you leave this as blank then *NONE will be assumed.

User Password

Specify the password required to open the PDF document (case sensitive). If you leave this as blank then *NONE will be assumed.

Encryption Specification

*V1 - Version 1 encryption, which uses a 40 bit key length, and is compatible with Acrobat Reader 4.0 and lower.

Note: Version 1 only implements the first four permissions: "Allow print", "Allow change", "Allow copy", and "Allow annotation". Other permissions are ignored and readers treat them as if *YES was specified.

*V2 - Version 2 encryption using a key length 128 bits. Version 2 encryption requires Acrobat Reader 5.0 or higher.

Allow the following operations:

Print

Check this entry if printing of the PDF document is allowed.

Print as Image

Check this entry if you wish to allow the document to be printed if "print as image" is selected.

Change

Check this entry if changing the PDF document is allowed.

Copy

Check this entry if copying from the PDF document is allowed.

Annotation

Check this entry if annotation of the PDF document is allowed.

Form Fill-in and Sign

Check this entry if form fill-in and document signing operations are allowed.

Accessibility Inspection

Check this entry if text and graphics can be extracted from the document for the sole purpose of making the contents accessible through assistive technologies such as screen readers or Braille output.

Document Assembly

Check this entry if document assembly operations, including insertion, rotation, deletion of pages and creation of bookmarks and thumbnails, are allowed.