Locking and hiding layers

When you lock a layer, you prevent any object on that layer from being selected. Hiding a layer makes all the objects on that layer invisible (and also prevents them from being selected or changed).

Tip: If you press ALT+click on a Lock icon , Expression Design locks all the layers except the layer you clicked, unless all of the other layers are currently locked, in which case pressing ALT+click unlocks them all. Similarly, you can toggle the visibility state of all the layers except one (making them all visible or all hidden) by pressing ALT+click on the layer's Visibility icon .