What does Heading tags mean?
Heading tags are the HTML elements h1 through h6. They represent the structure of a webpage and should form a clear hierarchy.
AN EXAMPLE IN PRACTICE
Where you might encounter it
A glossary entry uses its term as an H1. Sections such as Definition and Example use H2; further subsections can be organized with H3.
Further sources
From NetzTurm Decode. Clear explanations with historical context.