From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Harkins < jamshark70@gmail.com>
Subject: Re: DTD prohibited
Date: Tue, 3 Jun 2014 00:34:58 +0000 (UTC)
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References: <6613507.WMGd5MBtyv@linux-j9m3.site> <87vbsjczqg.fsf@bzg.ath.cx>
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Bastien <bzg <at> gnu.org> writes:

> 
> Hi Alexander,
> 
> AW <alexander.willand <at> t-online.de> writes:
> 
> > Now, Word no longer can open the html-documents produced by orgmode. The 
error 
> > message is (translated from German): "DTD prohibited".
> 
> You may want to customize `org-html-doctype' but you probably need to
> digg further to know what DTD is prohibited exactly.

Apparently, all of them:

http://en.m.wikipedia.org/wiki/Document_Type_Definition

Under "Security":

~~
An XML DTD can be used to create a denial of service (DoS) attack by defining 
nested entities that expand exponentially, or by sending the XML parser to an 
external resource that never returns.[10]

For this reason, .NET Framework provides a property that allows prohibiting or 
skipping DTD parsing, [10] and recent versions of Microsoft Office 
applications (Microsoft Office 2010 and higher) refuse to open XML files that 
contain DTD declarations.
~~

So, if org ODT export now depends on a DTD, then we'd have to say that we 
don't support exported files that open in MS Word.

hjh