Writers and editors will have the option of including subtitles, i.e., secondary titles. These will be printed just below the main title, in smaller type but still set off from the main article. Subtitles should be used when writers and editors feel that the main title by itself might be less informative than is needed or when an alternative spelling is common or important to note. Secondary titles are not to serve the function of definitions, but they are to be used to disambiguate or otherwise clarify the subject under discussion. They should be written with the first letter capitalized and a period at the end. They will often, but perhaps not always, consist of remarks on words or names rather than their meanings. For example, a secondary title for "Aesthetics": "Also spelled 'esthetics.'" For "Irish traditional music": "Also known as 'Irish music,' and, in Ireland and Irish music-playing circles, as simply 'trad' or 'traditional music.'" What secondary titles should be used, if any, should be discussed during the article review process.