PDF (adobe.com)

Lock or unlock objects

You can use the Lock Position command to specify that you don’t want certain objects to move in your document. As long as an object is locked, it cannot be moved, although you can still select it and change other attributes such as color. Locked objects stay locked when a document is saved, closed, and then reopened.

  1. Select the object or objects that you want to lock in place.
  2. Do one of the following:

    • To lock the objects, choose Object > Lock Position.

    • To unlock the objects, choose Object > Unlock Position.

You can also use the Layers panel to lock one or more layers. This locks the positions of all objects on a layer, and also prevents them from being selected.