<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">diptychs</topic></authority><related type="broader"><topic>visual works by form</topic></related><related type="broader"><topic>polyptychs</topic></related><variant type="other"><topic>diptych</topic></variant> <note xml:lang="en"><![CDATA[ Works comprising pairs of panels hinged together. They were used by the ancient Romans for writing tablets, often having images on the outer surfaces. In Medieval and later times, they were used primarily to support images for altarpieces and other purposes, most often composed of carved ivory or of painted wood panels, with the primary images on the interior surfaces. ]]></note></mads>