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diff --git a/xmlGrammer/XMLLexer.g4 b/xmlGrammer/XMLLexer.g4
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+/*
+ [The "BSD licence"]
+ Copyright (c) 2013 Terence Parr
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/** XML lexer derived from ANTLR v4 ref guide book example */
+lexer grammar XMLLexer;
+
+// Default "mode": Everything OUTSIDE of a tag
+COMMENT : '<!--' .*? '-->' ;
+CDATA : '<![CDATA[' .*? ']]>' ;
+/** Scarf all DTD stuff, Entity Declarations like <!ENTITY ...>,
+ * and Notation Declarations <!NOTATION ...>
+ */
+DTD : '<!' .*? '>' -> skip ;
+EntityRef : '&' Name ';' ;
+CharRef : '&#' DIGIT+ ';'
+ | '&#x' HEXDIGIT+ ';'
+ ;
+SEA_WS : (' '|'\t'|'\r'? '\n')+ ;
+
+OPEN : '<' -> pushMode(INSIDE) ;
+XMLDeclOpen : '<?xml' S -> pushMode(INSIDE) ;
+SPECIAL_OPEN: '<?' Name -> more, pushMode(PROC_INSTR) ;
+
+TEXT : ~[<&]+ ; // match any 16 bit char other than < and &
+
+// ----------------- Everything INSIDE of a tag ---------------------
+mode INSIDE;
+
+CLOSE : '>' -> popMode ;
+SPECIAL_CLOSE: '?>' -> popMode ; // close <?xml...?>
+SLASH_CLOSE : '/>' -> popMode ;
+SLASH : '/' ;
+EQUALS : '=' ;
+STRING : '"' ~[<"]* '"'
+ | '\'' ~[<']* '\''
+ ;
+Name : NameStartChar NameChar* ;
+S : [ \t\r\n] -> skip ;
+
+fragment
+HEXDIGIT : [a-fA-F0-9] ;
+
+fragment
+DIGIT : [0-9] ;
+
+fragment
+NameChar : NameStartChar
+ | '-' | '_' | '.' | DIGIT
+ | '\u00B7'
+ | '\u0300'..'\u036F'
+ | '\u203F'..'\u2040'
+ ;
+
+fragment
+NameStartChar
+ : [:a-zA-Z]
+ | '\u2070'..'\u218F'
+ | '\u2C00'..'\u2FEF'
+ | '\u3001'..'\uD7FF'
+ | '\uF900'..'\uFDCF'
+ | '\uFDF0'..'\uFFFD'
+ ;
+
+// ----------------- Handle <? ... ?> ---------------------
+mode PROC_INSTR;
+
+PI : '?>' -> popMode ; // close <?...?>
+IGNORE : . -> more ;