Originally Posted by gmw
There is an extension/plug-in Writer2xhtml
that will allow you to export from OpenOffice or LibreOffice to EPub - which you can then open in Sigil for a final tidy-up. Writer2xhtml does a very good job of producing a fairly clean epub, but like all office software, there's generally some invisible detritus in there that I like to eliminate (and I'm also obsessive about other things
Thanks gmw. This sounds too good to be true. (I looked at the link.) It seemed like Glen favored LibreOffice, so if I compose in LibreOffice, then I export to EPub, then to Sigil for the final tidy-up, I'll be good to go.
I've got a couple of novels in Word 2003 still so those will be what I'll be working on for a bit, but I'm definitely keeping your suggestion in mind for future projects. Thanks a lot.