ExtFunctions = {('http://exslt.org/strings', 'align'): <function Align>, ('http://exslt.org/strings', 'concat'): <function Concat>, ('http://exslt.org/strings', 'decode-uri'): <function DecodeUri>, ('http://exslt.org/strings', 'encode-uri'): <function EncodeUri>, ('http://exslt.org/strings', 'padding'): <function Padding>, ('http://exslt.org/strings', 'replace'): <function Replace>, ('http://exslt.org/strings', 'split'): <function Split>, ('http://exslt.org/strings', 'tokenize'): <function Tokenize>}