xml - External system entities are not working for me in Chrome, IE or Netscape. What am I doing wrong? -

i attempting replicate example given in answer:

https://stackoverflow.com/a/5127928/356011

that illustrates using external entities include fragment of xml file in xml file.

doc.xml:

<?xml version="1.0" standalone="no" ?> <!doctype doc [         <!entity otherfile system "otherfile.xml">         ]> <doc>     <foo>         <bar>&otherfile;</bar>     </foo> </doc> 

otherfile.xml:

<baz>this content</baz> 

when attempt test opening doc.xml in browser, get:

 <doc>    <foo>       <bar/>     </foo>  </doc> 

rendered.

shouldn't rendering included file, well?

the reason isn't working browsers don't support xml. support restrictions, such "no external entities". don't know why.