Listing 5

macros {
  // the macros that are used in this dialog
  #equal_panes_left_right(a,b) {
    a.rect.width = parent.rect.width / 2;
    a.rect.height = parent.rect.height;
    b.rect.left = a.rect.width;
    b.rect.width = a.rect.width;
    b.rect.height = parent.rect.height;
  }
  #equal_panes_top_bottom(a,b) {
    // ...
  }
}
properties {
  pane1.bg = rgb(10,10,10);
  pane2.bg = pane1.bg + rgb(0,0,10);
  pane1.font_name = "Tahoma";
  // ...
}
layout horiz default {
   #equal_panes_left_right(pane1, pane2);
}
layout vert {
   #equal_panes_top_bottom(pane1, pane2);
}