The resizing feature allows you to manually resize nodes
and subgraphs by providing four handles at the corners of a figure.
Each entity implements the resizing in its own way, and each one can
have its own limitations.
The resize handles are graphically represented in the
diagram with four small arrows at the corners of the bounded element.
Each handle allows you to resize the entity by moving the corresponding
corner and using the opposite one as pivot. When you hover over an
arrow, its color changes to indicate that an action can be performed.
When you click the handle, it turns red (it becomes active) and the
size of the component changes according to the position of the mouse
cursor. When the mouse button is released, the handle becomes inactive
and the new size is defined.
Resizing an entity applies the corresponding geometric
transformation proportionally to the entity and its children.