Sorting <#list> by name

[eventime]

I've got a annoying issue I've not been able to solve for the life of me. In one of our FreeMarker .ftl template files, there exists a <#list>

<#list dom.DocumentList.Document as doc>
     <table width="100%" class="form">  
          <tr>
               <td width="90%">${doc.DocumentName}</td>
               <td width="10%"><a href="${doc.File.FileLink}">Open PDF</a></td>
          </tr>
     </table>   
</#list>
‍‍‍‍‍‍‍‍‍‍

The Document is simply a file that's been uploaded through Alfresco, and there are no extra custom properties or anything, just   
       Name:   
       Content Type:
       Encoding:
       Title:
       Description:
       Author:
       Size:   
       Creator:
       Created Date:
       Modifier:
       Modified Date:

All I want to do is sort the list by the name of the file (aka alphabetically). That's it. I've tried everything I can find online. How can I do this?
And please, do not give me a ?sort_by(['properties','cm:name']), as it was the first thing I tried, and got a ?sort_by(…) failed: Values used for sorting must be numbers, strings, or date/time values
Everything else has failed (hell, even ?sort doesn't work) (and what the hell does cm:name (aside from the obvious) actually mean, and *where* does one find those values anyways? I could never find an explanation anywhere)

Any assistance would be most helpful.
Thanks

[mikeh]

Did you try ?sort_by('name')  ?

Mike

[eventime]

I've tried that one already, and get a  "?sort_by(…) failed: Values used for sorting must be numbers, strings, or date/time values" (followed by the standard issue stack trace) in the log file.
There must be something simple I'm overlooking.

[mikeh]

Hmm… looking back at your code, I'm not sure what objects are in your dom.DocumentList.Document sequence.

However, you seem to be accessing doc.DocumentName so ?sort_by('DocumentName') should be a winner.

Mike

[eventime]

Good sir, you just made my day. That worked. I'm quite annoyed at myself, as I'd tried everything, BUT that one. Thank you very much.