Security

The items and parameters available in the window are explained as follows:

Enable Security

Ticking this check box to enable Encryption Level and Passwords options. If you prefer to save the PDF file without password security, leave this check box cleared.

Encryption Level

The following options are available:

·   Low 40-bit RC4 (Acrobat 3.x, 4.x)

·   High 128-bit RC4 (Acrobat 5.x and above)

Passwords

Passwords required to open the document

Ticking this check box to enable Disallow Users to options. Enter the desired passwords in the Password column.

Password required to change permissions and/or passwords

Ticking this check box to enable Disallow Users to options. Enter the desired passwords in the Password column.

Disallow Users to

Print the document

Ticking this check box to disallow users to print the document.

Copy texts and images

Ticking this check box to disallow users to copy the texts and images.

Modify the document

Ticking this check box to disallow users to modify the document.

Modify comments

Ticking this check box to disallow users to modify comments.

Enhanced Permissions (128-bit)

You may adjust the settings only when you set the Encryption Level at High 128-bit RC4 (Acrobat 5.x and above).

Allow printing in low resolution

Ticking this check box to allow users to print the document in low resolution.

Allow screen readers

Ticking this check box to allow users to read the document on screen.

Allow filling in form fields

Ticking this check box to allow users to fill in the form fields.

Allow changes to the assembly

Ticking this check box to allow users to change the assembly.

After all settings are done, click OK button to accept the settings and re-enter the passwords to confirm the settings, or click Cancel button to abort your adjustments and exit this window.