#define xmask_width 16
#define xmask_height 16
#define xmask_x_hot 7
#define xmask_y_hot 7
static char xmask_bits[] = {
   0x0f, 0xf0, 0x1f, 0xf8, 0x3f, 0xfc, 0x7f, 0xfe, 0xfe, 0x7f, 0xfc, 0x3f,
   0xf8, 0x1f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf8, 0x1f, 0xfc, 0x3f, 0xfe, 0x7f,
   0x7f, 0xfe, 0x3f, 0xfc, 0x1f, 0xf8, 0x0f, 0xf0};