Question

How can I make the text in the box (object) to brake into lines automatically to fit into the object, please?

Answer 1

1. Select the node or label in question.
2. Go to the properties view in the lower right corner.
3. Set option "Size" in the "Label" section to "Fit Node Width" or "Fit Node Size".
4. Set option "Configuration" in the "Label" section to "Cropping".

Automatic text wrapping uses the rectangular bounds of a node to determine when to break a line (i.e. if you use a non-rectangular shape like a circle, the text will not fit into the visual shape).
Moreover, the "Cropping" configuration only supports plain text, but no HTML formatted text.