(fn[rq rs](let[t"SacredWhite"]((:ht(.getAttribute rq"c"))
[:head[:title t" - b"]]
[:body[:button{:onclick"a()"}"+"]
 [:canvas#c{:width 1024 :height 600}][:script"
b=document.getElementById('c')
c=b.getContext('2d')
c.font='32px Courier New'
c.textAlign='center'
c.textBaseline='middle'
function d(){
 c.fillStyle='#ccc'
 c.fillRect(0,0,1024,600)
 c.fillStyle='#fff'
 c.fillRect(0,0,256,256)
 c.fillStyle='#888'
 c.fillText('"t"',128,128)}
d()
function a(){
 b.webkitRequestFullScreen()
 d()}"]])))