The word 'heading' has various meanings:
★ It is
synonymous with the related word '
Headline'.
★ A 'heading' is used to provide
hierarchical information about other information. Headings can emphasize or tell people what information is where, such as a title or subtitle or topic at the top or beginning of a paragraph or letter or chapter. Headings are used in
wiki,
HTML, and other markup languages.
★ In
navigation, a 'heading' is the
direction a person or vehicle is facing or pointing.
★ In some
mining jargon, a 'heading' is a communication tunnel which is being extended in a given direction.