Microsoft Office Support: Introduction to Tables of Contents (TOCs)You create a table of contents (TOC) by applying heading styles — for example, Heading 1, Heading 2, and Heading 3 — to the text that you want to include in the table of contents. Word 2013 searches for those headings and then inserts the table of contents into your document. Then you can automatically update your TOC if you make changes in your document.
