Rather than having text appear directly on your Onescreener page as a "Content" item, you can choose to add an icon that generates a pop-up window with your message/ biography/ updates in it. Here's how:
Starting at your page editor, click on the + Content button. Hit Icons and then the + Link Icon button.
Next, scroll down to the bottom and choose the + Text Icon button. Enter the name of your icon and your text, and hit save or update.
The text icon now appears in your list of active icons and on your page.