In addition, one of the characters can be underlined, for example to mark a keyboard shortcut. Plain buttons are pretty straightforward to use. You can also use the height and width options to explicitly set the size. If you display text in the label, these options define the size of the button in text units. See the Button description for an example how to specify the size in pixels also for text labels.
Labels can display multiple lines of text.
You can use newlines or use the wraplength option to make the label wrap text by itself. When wrapping text, you might wish to use the anchor and justify options to make things look exactly as you wish. You can associate a variable with the label. The label color. The default is platform specific.