OOo Draw : ER Diagrams

RBX

In the zone
I need some additional functionality in Draw so that I can show multivalued attributes (Hobbies is multivalued attribute in this picture : *www.juniata.edu/faculty/rhodes/dbms/images/eratts.png) and total participation of entities (shown using double line).

I am new with OOo so couldn't find a way to do this with inbuilt features neither could I find a suitable plugin, any help would be appreciated.

I'd also love something to allow me to export diagram to pdf or image without losing much details, I lost lines under the primary key attributes while exporting the diagram to pdf.
 
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