Controls behavior for new layer notifications, isolate layer display, and other layer interface settings.
Access Methods
In the Layer Properties Manager, click the Layer Settings button. 
Summary
Controls when notification occurs for new layers, layer behavior when some layer are isolated, whether layer filters are applied to the Layers toolbar, and the background color of viewport overrides in the Layer Properties Manager.
List of Options
The following options are displayed.
New Layer Notification
Controls the evaluation and notification of new layers based on the LAYEREVAL settings in the DWG file.
Note There should be no filter (Unreconciled Layer filter) displayed when LAYEREVALCTL = 0. If one is currently displayed, it will be turned off. You can set the unreconciled new layers filter active and select the layers in that filter. With the unreconciled layer selected, you can right-click and click Reconcile Layer.
Evaluate New Layers Added to Drawing
Checks for new layers that have been added to the drawing. (LAYEREVAL = 0)
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Evaluate New Xref Layers Only
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Checks for new layers that have been added to attached xrefs. (LAYEREVAL = 1)
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Evaluate All New Layers
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Checks for new layers that have been added to the drawing, including new layers added to attached xrefs. (LAYEREVAL = 2)
Notify when New Layers Are Present
Turns on new layer notification. (LAYERNOTIFY = 0)
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Open
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Displays new layer notification when new layers are present when you use the OPEN command. (LAYERNOTIFY = 2)
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Attach/Reload Xrefs
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Displays new layer notification when new layers are present when you are attaching or reloading xrefs. (LAYERNOTIFY = 4)
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Restore Layer State
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Displays new layer notification when you are restoring layer states. (LAYERNOTIFY = 8)
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Save
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Displays new layer notification when new layers are present when you use the SAVE command. (LAYERNOTIFY = 16)
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Insert
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Displays new layer notification when new layers are present when you use the INSERT command. (LAYERNOTIFY = 32)
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Display Alert for Plot When New Layers are Present
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Displays new layer notification when new layers are present when you use the PLOT command. (LAYERNOTIFY = 1)
Isolate Layer Settings
Controls settings for layers that have not been isolated:
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Lock and Fade
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Selects Lock and Fade as isolation method.
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Off
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Sets non-selected layers to Off.
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Off
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Sets non-selected layers to Off (in paper space).
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VP Freeze
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Sets non-selected layers to Viewport Freeze (in paper space).
Dialog Settings
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Apply Layer Filter to Layer Toolbar
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Controls the display of layers in the list of layers on the Layers toolbar and Layers panel on the ribbon by applying the current layer filter.
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Indicate Layers in Use
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Displays icons in the list view to indicate whether layers are in use. In a drawing with many layers, clear this option to improve performance.
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Viewport Override Background Color
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Displays a list of colors and the Select Color dialog box where you can select a background color for viewport overrides.
