A heading is just the title of a section of your document. Almost everyone uses them in longer documents, to organize their thoughts.
But do you know about their special function in both Word and Docs? Look for a section called “Paragraph Styles” – “Normal Text” “Heading 1” “Heading 2” etc. These will also be listed in a drop-down list in the top menu bar.
You can use this to set the style for headings and different levels of subheadings – typeface, size, bold/italic, indent, etc – to use them consistently throughout the document.
You can see them in the Outline to get a bird’s eye view of your content.
Once they’re all set up you can use them to make a Table of Contents (this option is all the way at the bottom of the Insert menu, you may have to scroll down.)
Get into the habit of thoughtfully marking up your Headings, and you may find your writing gets more organized.
.