You can access formatting toolbar by clicking on
When you select formatting option from the menu, the formatting will apply to the entire bubble.
To format a certain section of text, you can select that text and use the following keyboard shortcuts:
⌘Ctrl + B for bold, ⌘Ctrl + I for italics, and ⌘Ctrl + U to underline.
To format a line of text as a headline,
at the beginning of line, type # and then press
You can also press ⌘Ctrl + H to toggle current line being a header.
To create a bulleted list inside of a bubble, type * and Space at the beginning of each list item. After you've created one list item, you can press Enter to continue with your bulleted list.