Modifying existing objects   
Selecting objects
 
 Concepts 
 
 Procedure 
 
 Commands 
 

How to select a single object

How to remove selection from objects

How to select objects within an irregularly shaped area

How to select objects crossing an irregularly shaped area

How to remove several objects from the selection set

How to select the last modified objects

How to invert the object selection

How to select all objects

How to select all objects on the current layer

How to lock or unlock a layer