# ✎ Technique: The main landmark

Landmarks help assistive-technology users navigate to and between areas of a page, and they improve the efficiency of in-page navigation.

Landmarks are to sections what continents are to countries—they help break the interface up into a few large, semantically distinct areas such as headers, footers and navigation blocks. The main landmark defines the unique content of the page: the most likely reason a user visited the page in the first place.

The heading levels (1-6) are often considered a way of describing and determining the “importance” of a heading, with h1 being the most important. This might be reflected in the visual appearance of headings—higher-level headings typically appear as bigger and bolder text than lower-level headings.