You can select the table or cell as below.
Importance) It can't be selected in case of 'View as run mode'.
Method for selecting the single cell
You can select the specific cell by using the mouse or arrow keys in keyboard.
Selected cell color reverse to black.
Method for selecting the multiple cells
Select and move with pressing the specific cells by using the mouse left button.
Also, moving the cells with pressing 'Shift' and arrow key, makes same result.
When cursor is situated in front of the inserted table, shape of cursor is changed.
Single row can be selected by using the changed cursor shape.
For selecting the multiple rows, move a mouse with pressing the mouse button.
When cursor is situated above the inserted table, shape of cursor is changed.
Single column can be selected by using the changed cursor shape.
For selecting the multiple columns, move a mouse with pressing the mouse button.
Selection of the entire cells in table
When cursor is situated at left up corner, shape of cursor is changed.
Entire cells can be selected by pressing the mouse in changed cursor.
Selection of table or cells is cancelled by inserting a new one.
Relate items)
Selecting the entire Cell in Table