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<script>
requestIdleCallback(() => {
opener.postMessage('closing');
close();
})
document.onselectstart = () => {
let elapsed = false;
setTimeout(() => {
elapsed = true;
}, 200);
SpecialPowers.Services.tm.spinEventLoopUntil("spin for 200 ms", () => elapsed);
}
document.addEventListener("DOMContentLoaded", () => {
document.execCommand("selectAll", false)
});
</script>
<body></body>