Comment 11 for bug 171186

If anyone was going to work on it they might consider using LibFreehand
https://www.openhub.net/p/libfreehand
which is part of librevenge
from the Document Liberation Project
http://www.documentliberation.org/

P.S. the previous post linking to www.littlespringsdesign.com is long dead and although The Web Archive has a copy of the page mentioned it does not have copies of the templates that were offered for download.