...
To edit a box, hover the mouse over the box until you see 
. Move the mouse over the icon and click Edit box. You can edit the header, text, colour, line options, external content, etc.
| Tip |
|---|
Tip: It is possible to You can edit multiple boxes simultaneously. |
...
To change the size of a box, hover the mouse over the frame of the box, left-click, hold down the mouse button and drag the box to the correct size.
...