Modifying existing objects	Modifying existing objects
Filtering selection sets
Concepts     Commands

Commands
PROPERTY	It controls the properties of existing objects
AI_SELLAST	It selects the last inserted or modified objects
AI_SELINV	It reverses the current selection
AI_SELALL	It selects all the objects
AI_SELALL_AL	It selects all the objects on the current layer
AI_SELNONE	It deselects all the objects