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  • ButtonExpandable is an option for ButtonBox which specifies whether the button should expand to fill any GridBox position in which it appears.
  • The default setting is ButtonExpandable->True.
  • This setting is usually used for all buttons that appear in palettes.
  • With ButtonExpandable->False the size of a button is determined purely by its contents, independent of its environment.
  • With ButtonExpandable->False, gutters will often be left between buttons in a GridBox.
  • See the Mathematica book: Section 2.8.11.
  • See also: ButtonMargins, ButtonMinHeight, TextJustification.