Let's see how you can define an additional content block for subtitles.
1. Open the main template of your website (Layout | Templates).
2. Add the following code between the title and content of your page:
<h1>{title}</h1> <h2>{content block="Subtitle" oneline="true" wysiwyg="false"}</h2> {content}
3. Open any page based on this template (Content | Pages), and find the Subtitle field above the Content field.
4. Enter the subtitle, save the page, and view the page in the browser. You should see the text entered as a subtitle below the page title.
You have added an additional content block to the template. In this way, the editor of the page can enter structured data that is exactly placed in the template. The tag for the additional content block is shown as an input field in the admin console, and its content is displayed on the website at the place where it is defined in the main template.
You...