How to create a Level Filter that will not display levels from Level Libraries
In this example the design file elements have been placed on none Library Levels, it is sometimes useful to isolate these none Library Levels so the designer can see the data on levels that needs to be remapped to standard Library Levels.
Open the Level Manager
Create a new Level Filter and give it a name
In the Library column enter a '0' (zero) in the filter field
( Note: If the ' Library ' column is not displayed, right click on one of the other column headings and select ' Library ' from the popup list )
http://communities.bentley.com/products/microstation/w/microstation__wiki/26487.how-to-create-filter-showing-only-used-levels
http://communities.bentley.com/products/microstation/w/microstation__wiki/16897.how-to-turn-onoff-displayfreeze-of-levels-based-on-filter-names