🌐DeutschEnglishDeutschEspañolFrançaisPortuguêsTürkçeРусскийفارسی한국어中文日本語EntityQ5372118· pop 18· linked from 83 articlesWebsiteentwicklung: XHTML: DTDAlso known as Document type declaration, DOCTYPE, <!DOCTYPE>AnweisungAvailable in 13 languagesEspañolFrançais日本語РусскийPortuguêsCzechHebrewHungarianSerbianTürkçeفارسیConnectionsWorld Wide Web ConsortiumEntityHTML5EntityCategoriesSGMLXML-based standards