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<script>
function onLoad() {
try {
document.execCommand("insertUnorderedList");
} catch(e) {}
try {
document.execCommand("delete");
} catch(e) {}
}
function onToggle1() {
try {
getSelection().collapse(
document.querySelector("font"),
1
);
} catch(e) {}
}
function onToggle2() {
// For emulating the traditional behavior, collapse Selection to end of the
// text node in the <summary> which is the last child of the <body>.
const summary = document.querySelector("summary");
getSelection().collapse(summary.firstChild, summary.firstChild.length);
try {
document.querySelector("label").appendChild(
document.querySelector("font")
);
} catch(e) {}
}
</script>
<body onload="onLoad()">
<label contenteditable>
<details ontoggle="onToggle2()" open>
</details>
</label>
<details ontoggle="onToggle1()" open>
<font dir="rtl">
<summary>
</details></font></summary></body>