Visibility of the primary/foreign keys?

[mshenga]

We are trying to un-clutter ER diagrams in order to analyze the relational model. Is there a way to do the following:
1) Hide all columns other than primary and foreign keys?
2) Set default label visibility for all labels (in model, per style or or the whole tool), rather than having to go through each connector and deselect items?
3) Change default "Line Style" style of the connector, e.g. from "Custom Line" to "Auto Routing"?

Thanks,

Michael (Misha) Shengaout