How to delete material from database when material is "owned" by someone else?

[RayGrenoble]

I have a Hypersizer database into which I have imported material properties from other databases.

I want to delete some of the materials from the database. However, I get errors on some of them indicating that they cannot be deleted because they are owned by others.

How do I obtain 'ownership' of these materials so they can be deleted?

[August]

Hi Ray,

The 'ownership' can be over-ridden by using Tools->Material Cleanup to delete any material, including materials that are in use somewhere in the database.

-August