Mystery HTML

I am maintaining/migrating a large set of modules which together are housed in a SharePoint 2010 Site.  The system is composed of about 15 JavaScript files,  6 HTML files and all get loaded and used on a web page where some of the JavaScript is included via a custom master page.

My migration to 2013 has necessitated my digging into the code base further and while having myriad problems with the code disabling ribbon buttons and in general causing much pain,  I am currently trying to get a handle on this fragment of HTML thrown at the bottom of many of the HTML pages which get included in the solutions base page.

The fragment follows:
<html xmlns:mso="urn:schemas-microsoft-com:office:office" xmlns:msdt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882"><head>
<!--[if gte mso 9]><xml>
<mso:CustomDocumentProperties>
<mso:_dlc_DocId msdt:dt="string">QDT2M4CPEYAT-57-162</mso:_dlc_DocId>
<mso:_dlc_DocIdItemGuid msdt:dt="string">55860c12-f641-475e-981e-52764b43743e</mso:_dlc_DocIdItemGuid>
<mso:_dlc_DocIdUrl msdt:dt="string">http://SOME-DUDES-VM/_layouts/DocIdRedir.aspx?ID=QDT2M4CPEYAT-57-162, QDT2M4CPEYAT-57-162</mso:_dlc_DocIdUrl>
</mso:CustomDocumentProperties>
</xml><![endif]-->
</head>

I haven't a clue what it does and further the VM that it references "SOME-DUDES-VM"  is no longer online.  Any and all advice here would be greatly appreciated.
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Howard BashSenior Software EngineerAsked:
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Jamie McAllister MVPSharePoint ConsultantCommented:
This is Microsoft Office document description markup. Looks like the sort of thing SharePoint Designer amongst others can sometimes insert during page edits.

Balance of probabilities is it's total junk and can be discarded. (but keep a backup!)
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Howard BashSenior Software EngineerAuthor Commented:
Does the URL of the decommissioned VM still get "hit" though?  Anyway to unravel what it was supposed to do?
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Jamie McAllister MVPSharePoint ConsultantCommented:
That's a Document ID redirect address from Some Dudes development VM by the look of it. This looks like junk left over from development. Shouldn't be an issue.
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Howard BashSenior Software EngineerAuthor Commented:
So that section is only used by the Designer and so "should safely" be removable?
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Howard BashSenior Software EngineerAuthor Commented:
Also,  the developer had used a lot of jquery selects on CSS Classes some of which were only valid in SharePoint 2010 and the port to SharePoint 2013 will require some modifications.  Is there a list of replaced and removed classes for migrators?
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Jamie McAllister MVPSharePoint ConsultantCommented:
Not really my specialism, I suggest you raise a new question for that.
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