Models, levels, and filters in the Level Manager

• The current model is listed. You can expand (+) or contract (-) it to show or hide attached references. The levels for the model or selected reference are displayed in the detail section on the right.
• All Levels shows level information within all models in the open file.
• The Filters list can be expanded (+) or contracted (-) to show or hide named filters. These filters customize the level displays based on user-defined search criteria. When you select Filters, a list of all filters and their search criteria appears in the detail section. When you select a named filter, the search criteria are applied to the levels for the model.

A level's list entry shows:

• Modified – The field is populated if one or more of the level attributes or properties differs from the source. The source could be either a library or reference level. With respect to reference levels, Modified is always in the context of the reference source regardless of whether the reference level is also a library level.

  A tooltip listing the out-of-sync attribute or property displays when the cursor is over the modified icon.

• Name – displays the name of the level.
• Library — shows whether the level was imported from a library.
• Number — displays the level number.
• Description
• File in which it resides
• Logical — either Master (for the open DGN file) or the reference Logical name.
• Color
• Style
• Weight
• Material – allows additional, global control of material specifications.
• Global Display — indicates whether elements on the level are displayed.
• Global Freeze — indicates whether the level is frozen. If frozen, elements on the level are not displayed and cannot be printed. When a level is frozen, all component elements contained in shared cell instances or references placed on that level are not displayed.
• Lock — indicates whether the level is locked. If locked, you cannot manipulate or modify its existing elements.
• Plot — indicates whether elements on the level can be printed.
• Used — shows whether the level is used in its references.
• Elements — lists the number of elements on the level.
• Priority — (2D models only) identifies the level display priority value. A level with the highest priority value displays in front, while a level with the lowest priority value displays in back. Reference and element priority values also affect the display.
• Transparency — identifies the level transparency value. A value of 0 indicates no transparency and a value of 100% indicates almost complete transparency.
• Show All
• List – opens the Show/Hide Tools option box, which allows you to turn display options on and off.

• ByLevel — When turned on, causes all elements with bylevel attributes to be displayed with the same element symbology.
• Overrides — View setting that, when turned on, causes all elements on a particular level to be displayed with an alternate set of element symbology than the default. Level Overrides must be turned on in the View Attributes dialog for the override symbology to display.

Select <none> to not use a filter, select All Levels to display all levels in all models, or select the filter name.