Click anywhere in the drawing area then let go of your cursor and move your mouse to the right. You will see a window with a solid boundary that is, by default, blue in color. This window is the selection window and all the objects that are completely inside this window will be added to the selection set. To finish making the selection, simply click again and the objects will be selected:
Figure 1.16: Objects selected with a selection window
In figure 1.16, all objects that are completely inside the selection window are highlighted and will be selected, whereas objects that are partially inside and partially outside will not be included in the selection set.