Creates the ability to collapse content that comes after headings. Click on the heading and then on the control bar button on the right. Select 'Toggle collapse' from the menu.
<!DOCTYPE html>
<html>
<head>
<title>Redactor</title>
<meta charset="utf-8">
<!-- css -->
<link rel="stylesheet" href="/your-folder/redactor.css" />
</head>
<body>
<!-- element -->
<textarea id="entry">...</textarea>
<!-- js -->
<script src="/your-folder/redactor.js"></script>
<script src="/your-folder/plugins/collapse/collapse.js"></script>
<!-- call -->
<script>
Redactor('#entry', {
plugins: ['collapse']
});
</script>
</body>
</html>