Comment 4 for bug 1552972

Apparently because it starts with an '_' its a 'very well hidden' bookmark, and it was introduced with Office 2010. <a href="https://social.msdn.microsoft.com/Forums/office/en-US/0e0c5c33-dc4b-4e0f-b795-7868e6a63836/goback-hidden-bookmark-in-open-xml-while-processing-office-2010-word-document?forum=oxmlsdk">_GoBack hidden bookmark in Open XML while processing office 2010 word document</a>

I'm not interested in carrying any bookmarks through to the epub as anchors -- what purpose do they serve?

It would be nice if DOCX Input had a 'Discard bookmarks' option, failing that I'll see if Modify can remove them. I don't want to remove them in the DOCX as they have meaning in that context.

But something is not quite right - see attachment, the most recently added real 'bookmark/anchor' seems to be mis-labeled - its presumably Word writing wrong information in the DOCX Ψ²