Items in the lead should be presented in the following order: disambiguation links, maintenance tags, infoboxes, images, navigational boxes, and introductory text, moving to the heading of the first section.
More information about lead section elements.
<!-- CORRECT STRUCTURE OF LEAD SECTION -->
{{otheruses}}
{{unreferenced}}
{{Foo bar Infobox|name=...}}
[[Image:...|Typical Foo bar]] or {{Foo bar Navigation}}
'''Foo bar''' ...
[table of contents]
== First section ==
Disambiguation links should be the first elements of the page, before any image or infobox; if a reader has reached the wrong page, they typically want to know that first. Text-only browsers and screen readers present the page sequentially. A "for topics of the same name ..." disambiguation link is sometimes put at the beginning of an article to link to another article discussing another meaning of the article title. Do not make this initial link a section. In such cases, the line should be italicized and indented using templates. A horizontal line should not be placed under this line. See alsoWikipedia:Hatnote.
The maintenance tags should be below the disambiguation links. These tags inform the reader about the general quality of the article, and should be presented to the user before the article itself. Maintenance tags should be used sparingly.[1]
Infoboxes contain summary information or an overview relating to the subject of the article, and therefore should be put before any text. The primary difference between an infobox and a navigational box is the presence of parameters: a navigational box is exactly the same in all articles of the same topic, while an infobox has different contents in each article.
Images. An image's caption is part of the article text. If the article has disambiguation links (dablinks), then the introductory image should appear just before the introductory text. Otherwise a screen reader would first read the image's caption, which is part of the article's contents, then "jump" outside the article to read the dablink, and then return to the lead section, which is an illogical sequence.
Navigational boxes are a collection of links used in multiple related articles to facilitate navigation between those articles. Vertical navigational boxes, sometimes called "sidebars", and horizontal navigational boxes are sometimes placed in the lead, especially when no infobox is present. If an infobox is present, the navigation sidebar may be moved to either the top or bottom of any other section in the article.
Introductory text. As explained in more detail at Wikipedia:Lead section § Introductory text, all but the shortest articles should start with introductory text (the "lead"). The lead should establish significance, include mention of consequential or significant criticism or controversies, and be written in a way that makes readers want to know more. The appropriate length of the lead depends on that of the article, but should normally be no more than four paragraphs. The lead itself has no heading and, on pages with more than three headings, automatically appears above the table of contents, if present. See alsoWikipedia:Guide to writing better articles#Lead section.
The table of contents (TOC) automatically appears on pages with more than three headings. Avoid floating the table of contents if possible, as it breaks the standard look of pages. If you must use a floated TOC, put it below the lead section in the wiki markup for consistency. Users of screen readers expect the table of contents to follow the introductory text; they will also miss any text placed between the TOC and the first heading.