- How to use the "Heading 1" style, plus how to change styles for an entire document.
All formatting in Microsoft Word is controlled by styles. A style is a set of formatting instructions. Word applies the formatting instructions when you apply a style. Microsoft Word comes with dozens of built-in styles.
Here are the steps of applying a style:
Step 1: Select the text.
Step 2: Apply the style: using the mouse.
The results when choosing Heading 1: