      image {       function = BOX_GAP       file = "assets/notebook.png"        border = { 0, 0, 0, 0 }       stretch = TRUE       gap_file = "assets/notebook-gap-horiz.png"       gap_border = { 0, 0, 0, 0 }       gap_side = TOP     }      image {       function = BOX_GAP       file = "assets/notebook.png"       border = { 0, 0, 0, 0 }       stretch = TRUE       gap_file = "assets/notebook-gap-horiz.png"       gap_border = { 0, 0, 0, 0 }       gap_side = BOTTOM     }      image {       function = BOX_GAP       file = "assets/notebook.png"       border = { 0, 0, 0, 0 }       stretch = TRUE       gap_file = "assets/notebook-gap-vert.png"       gap_border = { 0, 0, 0, 0 }       gap_side = 