<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31452455</termId><termName>three-plane watermarks</termName><termType>PT</termType><termNote><![CDATA[ Refers to watermarks showing three thicknesses in the same sheet of paper, created by depressing or raising portions of the mold wiring or even by placing a bas-relief image in the mold, giving the effect of sculpture in the paper. Seen through light, the paper shows portions both lighter and darker than the paper substance itself. ]]></termNote><termCreatedDate>2026-03-30 21:01:49</termCreatedDate><relation><relationType>UF</relationType><termId>31452456</termId><termName>shadow watermarks</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31452457</termId><termName>three-plane watermark</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31431033</termId><termName>watermarks</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31452458</termId><termName>light-and-shade watermarks</termName><termType>PT</termType></relation></term>  </Zthes>