Dumped this into console and got a "<<<" at the caret position in Safari, Firefox and Chrome.
```
setInterval(function() {
var area = JX.$('comment-content');
var r = JX.TextAreaUtils.getSelectionRange(area);
var d = JX.TextAreaUtils.getPixelDimensions(area, r.start, r.end);
JX.log(d);
try {
JX.DOM.remove(JX.$('ptr'));
} catch (_) {}
document.body.appendChild(
JX.$N(
'div',
{id: "ptr", style: { position: 'absolute', left: d.start.x + 'px', top: d.start.y + 'px', zIndex: 9999, border: '2px solid red' }},
'<<<'));
}, 1000);
```