Author Control graphic is displayed in the lower-left corner of the Text group on the Properties ribbon. The graphic changes to the 
Locked Control graphic to show that the object is password-protected.
Protect the contents of a text block by enabling Author Control. With Author Control enabled, additional authors will not be able to edit the contents of the text block unless they have the master Author Control password. The master Author Control password must first be set within the Title Properties.
When Author Control is enabled on a title, the Author Control graphic is displayed in the lower-left corner of the Text group on the Properties ribbon. The graphic changes to the Locked Control graphic to show that the object is password-protected.
See also: Protecting your title with a password
To enable author control on a text block:
Do one of the following:
In the Title Explorer, double-click the 
graphic of the text block.
In the Title Explorer, right-click the graphic and select Properties.
In the work area, right-click the text block and select Properties.
The Properties ribbon is displayed.
Click the . Author Control graphic in the first group.
The text block is protected. The graphic changes to the Locked Control graphic.
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