note tag is used to add additional
information that is related to text in a CNXML document, which
you may want located outside the current body of text. These
notes can be points of information, cautions, warnings, and so
on.
<para id="noteexample"> Chemistry lab was always a lot of fun. We played with a lot of chemicals such as Sulfuric and Hydrochloric acid. <note type="warning">Sulfuric and Hydrochloric Acid are very dangerous. Please handle with caution.</note> </para>