Note
Selecting a region in the drawing area from left to right or from right to left will have different effects.
Proper use would enable selection of desired elements excluding other elements.
Select region from left to right
Left-click and extend upward or downward the rectangular box from left to right.
The rectangular box is in solid line.
Only elements wholly contained in the rectangular box will be selected (highlighted).
Select region from right to left
Left-click and extend upward or downward the rectangular box from right to left.
The rectangular box is in dotted line.
Any elements partly within the rectangular box will be selected (highlighted).
