Final answer:
The 'Shapes' button in the Illustrations group on the Insert tab of Microsoft Word provides a variety of graphical elements like basic shapes and callouts to enhance documents.
Step-by-step explanation:
Clicking the Shapes button in the Illustrations group on the Insert tab displays a menu containing lines, basic shapes, block arrows, flowchart elements, callouts, and stars and banners. This feature is part of Microsoft Word and assists users in adding various graphical elements to their documents. Users can choose from a variety of shapes to convey information visually or add interest to their documents. For example, block arrows can direct attention, callouts can highlight annotations, and stars and banners can add emphasis to particular sections. This functionality is essential for creating visually engaging and informative documents.