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language-version Code Language Version

Version of the language in which this code is written, e.g. “3.0”, for code written in “JavaScript 3.0”. (The language name “javascript” is recorded in the @language attribute.)
OPTIONAL on element: <code>
Value Meaning
Text, numbers, or special characters The version of the language in the code sample, such as “3.0”, “8A”, etc.
Restriction @language-version is an optional attribute; there is no default.
Tagged Sample

Version 11 of C++

...
<code   
  code-type="user interface control" 
  language="C++"
  language-version="11"
  xml:space="preserve" 
  orientation="portrait"
  position="anchor">
 #include &lt;conio.h>
 #include&lt;win_mous.cpp>
 // Needed for mouse &amp; win functions#define
 ...
</code>
...