ZERO-WIDTH Space

1. Create zero-width.html with the following content.

<html>
<header>
<title>ZERO-WIDTH Space</title>
</header>
<body>
<center>
<h2>ZERO-WIDTH Space</h2>
<textarea>&#8203;</textarea>
</center>
</body>
</html>

2. Select all in the text area and copy the zero-width character to the clipboard.