Length and Size

This Tag Set has a single general purpose element <size> for recording the number of pages in a book, the showing time of a film, the number of kilo/mega/tera-bytes in a dataset, or any other measurement of size, length, or extent that may be recorded for a cited work.
The @units attribute must be used to state the units of measure, such as “pages”, “minutes”, “paragraphs”, “MB”, etc. A units value is typically given in the plural (“pages” not “page”).
<page-count> is a metadata element in the description of the work that records similar page-size information for the work rather than for cited material. The <size> and <page-count> elements are modeled very differently. The size element is assumed to contain the textual value of the size:
<size units="paragraphs">8</size>
while the page count element is an EMPTY element that stores its value in the @count attribute:
<page-count count="26"/>
In element-style citations (<element-citation>), displaying the units can be handled in the following ways: