
XML Syntaxes • 97
The <?xml> tag identifies the document as an XML document. This must always be the first
statement in a XML document.
Character encoding allows us to specify the language based on the ISO standards or Unicode
standards, which is used to create the markup and the contents of the document.
Every XML document must have exactly one root element. All the other contents of the XML
document are a sub-part of this root element.
Every element having value or sub-elements must have an opening and a closing tag.
Empty elements can have an opening and closing tag pair or can have only one tag <elementname/>.
An entity ...