Editing Module:Convert/documentation/conversion data/introduction (section)

=== Composite ===
A composite input unit consists of two standard units, where the second is a subdivision of the first. For example, <code>|2|ft|6|in</code> may be used to specify 2&nbsp;feet 6&nbsp;inches as the input unit in a conversion. See the [[#Input multiples|Input multiples]] section.

Composites are defined in pairs, but any number of pairs can be used to specify an input. For example, given that <code>ch</code> is defined as a subdivision of <code>mi</code>, and that <code>ft</code> is a subdivision of <code>ch</code>, an input length could be specified as <code>1|mi|2|ch|3|ft</code>. Also, with suitable pairs defined, an input length could be specified as <code>4|mi|3|yd|2|ft|1|in</code>. There is no limit to the number of permitted subunits.