layout.flag = {};
layout.flag.row = 0x002;
layout.flag.column = 0x003;
layout.flag.layout = 0x000;
layout.flag.flex = 0x002;
layout.flag.nowrap = 0x000;
layout.flag.wrap = 0x004;
layout.flag.start = 0x008;
layout.flag.middle = 0x000;
layout.flag.end = 0x010;
layout.flag.justify = 0x018;

layout.flag.left = 0x020;
layout.flag.top = 0x040;
layout.flag.right = 0x080;
layout.flag.bottom = 0x100;
layout.flag.hfill = 0x0a0;
layout.flag.vfill = 0x140;
layout.flag.hcenter = 0x000;
layout.flag.vcenter = 0x000;
layout.flag.center = 0x000;
layout.flag.fill = 0x1e0;
layout.flag.break = 0x200;