HTML5 formats

Source

Below is all you need to setup the example.

<script type="text/javascript" src="<your installation path>/tinymce/tinymce.min.js"></script>
<script type="text/javascript">
tinymce.init({
    mode: "textareas",
    plugins: "visualblocks",
    content_css: "css/content.css",
    style_formats: [
        {title: 'Headers', items: [
            {title: 'h1', block: 'h1'},
            {title: 'h2', block: 'h2'},
            {title: 'h3', block: 'h3'},
            {title: 'h4', block: 'h4'},
            {title: 'h5', block: 'h5'},
            {title: 'h6', block: 'h6'}
        ]},

        {title: 'Blocks', items: [
            {title: 'p', block: 'p'},
            {title: 'div', block: 'div'},
            {title: 'pre', block: 'pre'}
        ]},

        {title: 'Containers', items: [
            {title: 'section', block: 'section', wrapper: true, merge_siblings: false},
            {title: 'article', block: 'article', wrapper: true, merge_siblings: false},
            {title: 'blockquote', block: 'blockquote', wrapper: true},
            {title: 'hgroup', block: 'hgroup', wrapper: true},
            {title: 'aside', block: 'aside', wrapper: true},
            {title: 'figure', block: 'figure', wrapper: true}
        ]}
    ],
    visualblocks_default_state: true,
    end_container_on_empty_block: true
});
</script>

<form method="post" action="somepage">
    <textarea name="content" style="width:100%">
    </textarea>
</form>