const char b_arrowl[] = {
   0x10,0x10,
   0x7f,0xfe,
   0xff,0xff,
   0xc0,0x03,
   0xc0,0x03,
   0xc0,0x1b,
   0xc0,0xfb,
   0xc7,0xfb,
   0xdf,0xfb,
   0xdf,0xfb,
   0xc7,0xfb,
   0xc0,0xfb,
   0xc0,0x1b,
   0xc0,0x03,
   0xc0,0x03,
   0xff,0xff,
   0x7f,0xfe
}

const char b_arrowr[] = {
   0x10,0x10,
   0x7f,0xfe,
   0xff,0xff,
   0xc0,0x03,
   0xc0,0x03,
   0xd8,0x03,
   0xdf,0x03,
   0xdf,0xe3,
   0xdf,0xfb,
   0xdf,0xfb,
   0xdf,0xe3,
   0xdf,0x03,
   0xd8,0x03,
   0xc0,0x03,
   0xc0,0x03,
   0xff,0xff,
   0x7f,0xfe
}