Wikipedia articles are composed and formatted according to the Manual of Style (MOS). MOS sets the house standard on Wikipedia for attributes like link formatting, capitalization, punctuation, and sections. MOS includes guidelines for biographies, citations, titles, dates and numbers, proper names, and many other stylistic details.
Some examples of the elements of style in the MOS are:
Article titles—use normal body text capitalization for titles (beginning letter, capitalize proper nouns, etc.), and apply the singularform in titles wherever possible.
Capitalization—do not capitalize all words in section headings, or non-proper nouns
Link placement—list external links in their own section at the bottom of an article
To place the MOS template at the right on your User page for easy reference, edit your User page and copy/paste: {{style}} (including the curly braces).
Please follow the MOS guidelines when you update an article.