Label is a non-editable text control. A Label is useful for displaying
text that is required to fit within a specific space, and thus may need
to use an ellipsis or truncation to size the string to fit. Labels also are
useful in that they can have mnemonics which, if used, will send focus to
the Control listed as the target of the labelFor property.
Label sets focusTraversable to false.
Example:
Label label = new Label("a label");extends