Tag Filter Relationship

DocMan use the "OR" relationship for filtering tags. For me is it the wrong way to filter by tags (admin and user). The meaning of tagging is, that I could give multiple tags like attributes of this file. If you only filter with relationship "OR" you will get approximately a wrong file list.

It would be nice, if you guys will implement a function/option to select the relationship I want.

The function must have the options:

1. AND
2. OR

Thanks for a fast implementation!

Urs