Inject rich HTML content. Interface is in the "Developer Tools" panel.
Inject raw HTML into rich content editors to get content not possible through the interface.
While on your web app in which you are composing a post or message with rich content, open up the developer tools panel. Now under the "myHawk" tab you can write and preview custom HTML to put in your message.
Put a key word in your message and then "tag" it in the "myHawk" tag field and inject!
Note: Does not inject in some more complex editors that track changes via scripts. Also, web apps do have security filters so desired content can get filtered when sent and again when displayed. This tool does not circumvent security measures to deliver any content. This tool is meant to augment rich message editors for those that know how to code.