Level Display dialog box

Used to turn on and turn off levels in a model. Also used to apply filters created in the Level Manager dialog box to a model.

Opens when the Level Display icon in the Primary Tools tool box is selected, when Level > Display is chosen from the Settings menu, or when Level Display is chosen from a view window control menu.

views (buttons labeled 1..8)

Sets the view(s) within the model on which the levels are being displayed, if the View Display mode is selected.

Right-clicking on any view button opens a pop-up menu with the following items:

• Apply View to All Views — applies level X display settings to all views.

• Select View Only — targets view X for level display settings adjustment.

• Select All Views — targets all views for level display settings adjustment.

mode (option menu)

Sets the operating mode for this dialog box.

Turning on/off level display is basically the same as thawing/freezing levels, with one difference. When a level is frozen, any cells or references placed on that level will not be displayed, regardless of how levels are used in the elements that make up the cell or reference.

• View Display
— (DGN workmode only.) Changes in the level display affect the chosen view in the active model.

• Global Freeze
— Changes in the level display affect all views in all models in the open file. When Global Freeze is on, elements on the frozen levels are not displayed and cannot be printed (plotted).

The Global Freeze setting also affects references. When you open a DWG file, AutoCAD XREF attachments and layout viewports are treated as reference attachments, and each is assigned to a level. If a level is frozen, any references on it are not displayed, and cannot be printed or plotted.

• Global Display
— Changes in the level display affect all views in all models in the open file.

• Viewport Freeze
— (DWG workmode only.) Changes in the level display affect all views in only the open sheet model (DWG layout viewport). When Viewport Freeze is on, elements on the frozen levels are not displayed and cannot be printed (plotted).

The Viewport Freeze setting also affects references. If a level is frozen, any references on it are not displayed, and cannot be printed or plotted.

Change Level

Opens the Change Level tool, which is used to toggle the display or locked status of a level.

Target Tree (icon)

Toggles the display of the target tree, which is used to set the target model for level display settings changes.

show (option menu)

Determines the contents of the list box.

• Filters
— Lists level filters defined in the open file (and in reference attachments if they are included in the target tree).

• All Levels
— Lists the levels in the open file (and in reference attachments if they are selected in the target tree).

list filter (option menu)

If the mode option menu is set to Levels, sets the Filter — named or defined on-the-fly— applied to level display

target tree

Used to select the target model for level display settings changes. This tree control enables selection of the active model, another model in the open DGN file, or an attached reference in the open file or another file, as the target.

A dimmed entry in the tree indicates that the display of that reference is turned off.

levels (list box)

Lists the levels (or filters if Mode is set to Filters) in the target model.

Right-clicking the list box brings up a pop-up menu with the following options:

Menu Item	Description
All On	Turns on all levels in the file (and attached references if they are included in the Target field).
All Off	Turns on all levels in the file (and attached references if they are included in the Target field).
Invert Selection	Selects all unselected and deselects all selected levels listed in the dialog box.
Off By Element	Launches the Change Level tool in Display Off mode.
All Except Element	Launches the Change Level tool in Display Only mode.
Save Filter	If the Mode is Levels and Untitled, All Levels or a filter is select from the Filter List, the filter row appears allowing you to create an on-the-fly filter. Clicking Save Filter opens the Save Filter dialog box for saving and naming the filter.
Level Manager	Opens the Level Manager dialog box.
Properties	Opens the Level Display Properties dialog box.

Right-clicking in the grey area of the header in the Level Display dialog box brings up a pop-up menu with the Properties option.

Key-in: SET LEVELS <OFF | ON>

Key-in: REFERENCE LEVELS <OFF | ON | TOGGLE> [reference_attachment]