The technique of "heading" should be used in contexts where it helps organize and guide readers through a document or text by dividing information into sections, allowing easy navigation and clear understanding of content. In writing, headings are used to introduce new or more specific topics, clarify the content of sections, and show how each section fits within the overall structure. They should be descriptive, concise, and as long as needed to clearly communicate the section's content, typically using higher-level headings for general topics and lower-level headings for specific details.
If referring to the technique of heading in football (soccer), heading is used both for defensive and attacking purposes when the ball is in the air. It is used to score goals, maintain or regain possession of the ball, or eliminate a goal-scoring threat. Proper heading technique involves using the forehead to strike the ball, maintaining visual contact with the ball, positioning appropriately, and executing with body movement and follow-through for accuracy and power.
Please clarify if the question is about the use of "heading" as a text/organizational tool or as a technical skill in football.
