Raggett, Dave RDF (Resource Description Framework) 2nd readers (Cocoon) 2nd recursion regexp matcher regular expressions (regexps) 2nd 3rd for whitespace characters in Cocoon in EXSLT RELAX NG, schema language 2nd RenderX repeat, XForms element type report, Schematron element type Request For Comments [See RFC] Resource Description Framework [See RDF] result-document, XSLT instruction 2nd 3rd 4th 5th 6th RFC (Request For Comments) RFC 2396 robots.txt, spider control file 2nd root element 2nd 3rd 4th 5th 6th 7th 8th 9th root node RSS, format rsync, utility RTF, format 2nd rule, Schematron element type rules, in Schematron 2nd abstract dummy order of vs. separate schemas