For example, in a WYSIWYM document, one would manually mark text as the title of the document, the name of a section, the caption associated with a figure, or the name of an author; this would in turn allow one element, such as section headings, to be rendered as large bold text in one style sheet, or as red center justified text in another, without further manual intervention. More often than not, this requires the semantic structure of the document to be decided in advance before writing it. The editor also needs a system for exporting structured content to generate the document's final format, following the indicated structure.