How to change unused library levels. How to make attribute / display changes to unused library levels.
Set MS_LEVEL_ALLOW_LIBRARY_LEVEL_EDIT = 1Setting the configuration variable
MS_LEVEL_ALLOW_LIBRARY_LEVEL_EDITcauses library levels to be copied to the opened DGN file to reflect changes to library level attributes.
Help documentation for Level Manager (Reference Guide > Menu > Settings Menu > Level Manager dialog box)