Box Model Features With No Home Specification

• margin-collapse control (auto, discard-at-breaks, never-collapse, discard)

Run-in Use-cases

• making <dt>s inline into the following <dd>, as in dictionaries
• minor headings, which shouldn’t carry too much visual weight to avoid distration
• Author credits, reporting locations, or dates on articles, which are often formatted inline in the first paragraph or last paragraph of an article