Select Drag:-
1) To select all those object located entirely inside the trap will be selected.

2) Intersecting Trap:-
Any object intersected by the trap will be selected.

3) Polygonal Trap:-
Drag to define (create the polygon ) around the object to be selected,then double-click to close the polygon.

4) Paint Stroke Selection:-
The Paint Stroke icon lets you select objects by simply drawing a paint stroke across them.Drag to create the paint stroke.