# Compose tips

• You can insert footnotes directly into texts with [fn]This text becomes a footnote.[/fn]. This will be replaced with a running number (the footnote reference) and the text within the [fn] tags will be moved to the bottom of the page (the footnote). See <a href="http://drupal.org/project/footnotes">Footnotes Readme page</a> for additional usage options.
• Mathematics inside the configured delimiters is rendered by MathJax. The default math delimiters are $$...$$ and $...$ for displayed mathematics, and $...$ and $...$ for in-line mathematics.