After writing your post, you may select some bonus options before sharing it with other people. Wordpress will apply these settings to the content you’re working on. By default, these options are located near the bottom screen. You can click on an option’s name to expand and use it.

If your screen doesn’t show any of these options, that means you need to enable them in the screen page. Click on the screen options on the upper right hand side and activate the modules you want to use.