'Name'         = "XML";
'Version'      = "1.0";
'Author'       = "W3C Recommendation 10-February-1998";
'About'        = "eXtenable Markup Language";

'Entry' = "XMLDoc";



XMLDoc ::= "<?" Name Attributes "?>" Object;


Objects   ::= Object Objects
              | Object;

Object    ::= StartTag Content EndTag
              | UnaryTag;

StartTag ::= "<" Name Attributes ">";
EndTag   ::= "</" Name ">";

UnaryTag ::= "<" Name Attributes "/>";

Content   ::= Objects
              | Text
              | NULL;

Attributes ::=  Attribute Attributes               
               | NULL;

Attribute ::= Name "=" AttributeValue;


Text ::= Text Word
         | Word;

Word ::= Name
         | Symbol
         | "="
         | CharName
         | CharNumber;



{SymbolChars}     = {Printable} - {Letter} - ["<>'\"="] - {Whitespace};
{AttributeChars}  = {Printable} - ["\""];

//Comment Start = "<!--"
//Comment End   = "-->"

AttributeValue =  "\"" {AttributeChars}* "\"";

Name    = {Letter}{Alphanumeric}*;
Symbol  = {SymbolChars};

CharName    = "&" {Letter}+ ";";
CharNumber  = "&#" {Digit}+ ";";