Both the text style and the text itself is editable from this menu; including the font itself and any variations.
Stroke width and colour provides an outline for your text. Set stroke to zero to remove the outline.
Fill colour sets the main colour for the font and the alpha (visibility) percentage can be set between 0 and 100%.
Text can also be set to wrap over multiple lines and can be tied to the width of the shape (or a % proportion of width).
Line breaks and "whitespace" can also be added via the main Text field