You can select the cell by using as below method.
Method for selecting the single cell
You can select the specific cell by using the mouse or keyboard arrow keys.
Selected cell color reverse to black.
<Figure 1> Screen for selecting the single cell
Method for selecting the multiple cells
Select and move with pressing the specific cells by using the mouse.
Also, moving the cells with pressing the 'Shift' and arrow key, makes same result.
Importance) It can't be selected in case of 'View as run mode'.
<Figure 2> Screen for selecting the multiple cells
Relate items)