<?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">key blocks</topic></authority><related type="other"><topic>color printing</topic></related><related type="broader"><topic>printing blocks</topic></related><variant type="other"><topic>blocks, key</topic></variant><variant type="other"><topic>key block</topic></variant> <note xml:lang="en"><![CDATA[ Blocks used for printing color woodcuts, being the one block for a given image that carries the most detail and serves as a guide to register the other blocks. ]]></note></mads>