To view the data in a password-protected drawing, you must first obtain and enter the password. After you enter the password, it stays with the drawing, even if you modify and save the drawing, unless you remove the password.
To view data in a password-protected drawing, you open the drawing in a standard way and enter the password. Passwords are not case-sensitive.
You can view drawings that contain xrefs to password-protected drawings.
You can view drawing properties, such as the title, author, subject, and keywords, unless they were encrypted when a password was attached to the drawing.