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Very short sections and subsections clutter an article with headings and inhibit the flow of the prose. Short paragraphs and single sentences generally do not warrant their own subheadings. Headings follow a six-level hierarchy, starting at 1 and ending at 6. The level of the heading is defined by the number of equals signs on each side of the ...
"Level 3" gives you a subheading for a Level 2 heading, and so on. To create a heading without using the toolbar, put text between = signs; the number of = signs on each side of the text indicates the level: ==Heading== (Level 2) ===Subheading=== (Level 3) Text can be made bold or italic using the B and I buttons on the toolbar.
Headings and subheadings are a way to organise an article. If an article discusses several topics and dedicates more than a couple of paragraphs to each, you can make the article more readable by inserting a heading for each topic — that is, creating a section for each topic.
For a citation to appear in a footnote, it needs to be enclosed in "ref" tags. You can add these by typing <ref> at the front of the citation and </ref> at the end. . Alternatively you may notice above the edit box there is a row of "markup" formatting buttons which include a <ref></ref> button to the right—if you highlight your whole citation and then click this markup button, it will ...
These are sometimes called "levels" based on the number of equal signs before and after, so that the top "Section" above with two equal signs is a "level two" heading, the subsection is a "level three" heading, and the "sub-subsection" is "level four".
A document may also be considered to be divided into sections by its headings and subheadings, which may be used for a table of contents. For example, the hierarchical sections used in Wikipedia can be compiled into a table of contents for an article. Many books, however, only have chapter headings in the table of contents. [citation needed]
Although they shouldn't be used for every line, I think using subheads is good. As an encyclopedia is made to find information, I think this should be made easier. Even for small articles, I find it convenient if there's a heading indicating in which part of the article I may find a short history, a collection of external links, or a simple example, or the specific detail I'm looking for.
Boldface is often applied to the first occurrence of the article's title word or phrase in the lead.This is also done at the first occurrence of a term (commonly a synonym in the lead) that redirects to the article or one of its subsections, whether the term appears in the lead or not (see § Other uses, below).