When you plan the creation and deployment of your rights-enabled
PDF documents, make sure that you understand how usage rights, permissions,
and security settings work.
You can add usage rights to a PDF document that has any file
system permissions. The resulting file (with the added usage rights)
has read-write permissions.
Read-only file system permissions override usage rights. For
example, if you add usage rights to a PDF document, but the file
system permissions are later set to read-only, a user cannot save
changes to the original file. However, the user can make changes
and save the file to a different name.
You can use the Reader Extensions web application to add usage
rights to PDF documents that are encrypted or password-protected.
However, you need to decrypt the file or enter the password.
Note: When a PDF document containing expired Usage
Rights is opened in Adobe Reader, the user will see the following
message:
“This document contained certain rights to enable special features
in Adobe Reader. The document has been changed since it was created
and these rights are no longer valid. Please contact the author
for the original version of this document”.
