Body
Use headings in an article or service description when needed to organize the information into sections for clarity and readability. Put the most important information at the beginning of each heading.
Use HTML heading tags for all headings.
Heading 1 should not be used in TDX articles and service descriptions; heading 2 will be the highest level used in the Body or Long Description. Article Subject fields and service Name fields are rendered with Heading 1 (H2) tags, so the main headings within the article Body field or service Long Description field should be Heading 2. Headings beneath those should be Heading 3 and so on.
Don't skip headings; use them in descending order.
Descriptive headings are important for ADA accessibility as they help to find specific content and become oriented in the page. The requirement for Level AA is that headings must describe the topic or purpose, but for Level AAA, section headings must be used to organize the content of the page. To ensure web accessibility, see W3C's pages on:
Create a heading in a knowledge base article or service description
In the TDX editor, click into the heading text, click the Paragraph Format dropdown (default displays "Normal"), and select the heading level.
Microsoft Writing Style Guide: Headings