H:BR: "While valid forms without the / (such as <br> or <br >) will work properly in the rendered page ..., they can break several of the available syntax highlighters for wiki code in the editing view (mis-highlighting all text in the page after the occurrence of that tag), and so should be avoided."
H:DL: "Do not use a semicolon (;) simply to bold a line without defining a value using a colon (:). This usage renders invalid HTML5 and creates issues with screen readers. Also, use of a colon to indent (other than for talk page responses) may also render invalid HTML5 and cause accessibility issues per MOS:INDENTGAP."
