The selection tools allow you to choose which objects are selected by the drag-select region. When you click on the selection options tool 
, ABAQUS/CAE displays the Options toolbox, and you can choose one of the following:
Inside
Select only the objects that fall inside the drag-select region.
Inside and crossing
Select only the objects that fall inside or cross the drag-select region. This tool is selected by default.
Crossing
Select only the objects that cross the drag-select region.
Outside and crossing
Select only the objects that fall outside or cross the drag-select region.
Outside
Select only the objects that fall outside the drag-select region.