DEFAULT_TOOL_BAR_BUTTON_MARGIN 5825 src/gtkutil.c    hmargin = max (0, hmargin - DEFAULT_TOOL_BAR_BUTTON_MARGIN);
DEFAULT_TOOL_BAR_BUTTON_MARGIN 5826 src/gtkutil.c    vmargin = max (0, vmargin - DEFAULT_TOOL_BAR_BUTTON_MARGIN);
DEFAULT_TOOL_BAR_BUTTON_MARGIN 37319 src/xdisp.c      Vtool_bar_button_margin = make_fixnum (DEFAULT_TOOL_BAR_BUTTON_MARGIN);