PHP syntax. <What does xml mean?

$ Template & amp; lt; XML & amp; lt; xml & amp; gt; {code ...} & amp; lt; xml & amp; gt; XML; can be explained to me, here & amp; lt; what does XML mean? $ Template = <

    %s
    
    %s
    
    
     %s
    
    text
    
    %s
    
    
     %s
    

XML;

I can explain it to you here <

Reply content:

$ Template = <

    %s
    
    %s
    
    
     %s
    
    text
    
    %s
    
    
     %s
    

XML;

I can explain it to you here <

[CODE_LITE] < EOT; [/CODE_LITE]
The intermediate document is output directly. A better understanding is "one multi-line echo ".
The advantage is that it is convenient to output a large HTML or xml segment without escaping and variables can be referenced.

Heredoc
Http://php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc

Delimiters...

It looks like a string