Adobe illustrator 10 Manuale Utente

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Adobe Illustrator Help
Working with Objects 
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Locking and hiding objects
You can use the Lock and Hide commands to isolate parts of your artwork on which you 
do not want to work. Once an object is locked or hidden, it cannot be selected or modified 
in any way. These features are useful when you are working on objects that overlap. In 
addition, the Hide command makes objects temporarily invisible, and so may speed 
performance when you work on large or complex artwork.
Locked objects remain locked when files are closed and reopened. However, hidden 
objects reappear when files are reopened.
To lock or hide artwork: 
Choose from the following options:
To lock objects, select the objects and choose Object > Lock > Selection.
To lock all objects above the selected object, choose Object > Lock > All Artwork Above.
To lock all objects on other layers, choose Object > Lock > Other Layers.
To hide a selected object, select the objects and choose Object > Hide > Selection.
To hide all objects on other layers, choose Object > Hide > All Artwork Above.
To lock all objects on other layers, choose Object > Lock > Other Layers.
Note: You can lock or hide entire objects only. Selecting part of an object (anchor points or 
segments) and locking or hiding it affects the entire object.
To unlock all objects:
Choose Object > Unlock All. All previously locked objects are unlocked and selected. 
Any previously selected objects are deselected. 
To show all objects:
Choose Object > Show All. All previously hidden objects are shown. Any previously 
selected objects are selected.
To unlock or show all objects within a selected group:
Select an unlocked and visible element within a group.
Hold down Alt (Windows) or Option (Mac OS) and choose either Object > Unlock All or 
Object > Show All.