Partial box selection enables you to draw a 'rubber band' box around the objects you want to select. Objects that are even partially enclosed in the box are selected.
:
. This creates a rectangular rubber band on the screen:
In the example shown below, all the lines are selected because they are partially or completely enclosed by the box:
Whole box selection works similarly, but only objects that are completely enclosed in the box are selected.
:
. This creates a rectangular 'rubber band' on the screen:
In the example shown below, only the line completely
enclosed by the box is selected: