XMI (XML Metadata Interchange) support.
Submitted by Alan Horkan
import || export support for XMI
XMI stands for XML Metadata Interchange (XMI) http://xml.coverpages.org/xmi.html
OMG (Object Management Group) http://www.omg.org/technology/documents/formal/xmi.htm
mentioned on the mailing list several times, surprised no one actually filed a feature request for it before.
Other UML editors such as ArgoUML use the XMI file format.
http://mail.gnome.org/archives/dia-list/2001-July/msg00087.html "DIA can read and write XMI, it becomes compatible with all other CASE tools"
I think full SVG support is more important than XMI, but for people who want to use Dia just for UML it would be very important. Might actually be something businesses would pay to have added.