Inline Editing

Some widget properties, such as those related to position and size, are modified automatically as you work with elements in the designer.  Many widgets support inline editing, which allows you to modify the element’s content, alignment, text, and color properties quickly, without having to modify each property individually in the Properties Window.  To activate inline editing, double-click the element.
  

You may then type over the element’s content and use the inline editing toolbar to adjust the look and feel of the content.