Use layers
Using layers organizes objects so you can manipulate them all at once or keep track of them. When objects have a layer assignment, you can turn them all off at once, change their wireframe display color, and select them all with one selection.
Manage layers
![Toolbar: Layer | Standard](../image/command_icons/layer.png)
Layer
Toggle Layer panel.
![Toolbar: Layer](../image/command_icons/layerstatemanager.png)
LayerStateManager
Save and restore the current layer state.
![Toolbar: Layer](../image/command_icons/duplayer.png)
DupLayer
Duplicate (copy) a layer including all layer attributes and geometry.
![Toolbar: Layer](../image/command_icons/onelayeroff.png)
OneLayerOff
Turn off an object's layer.
![Toolbar: Layer](../image/command_icons/onelayeron.png)
OneLayerOn
Turn a layer on and all other layers off.
![Toolbar: Utilities](../image/command_icons/purge.png)
Purge
Delete unused block definitions, groups, layers, hatch patterns, linetypes, annotation styles, and materials.
Edit layer properties
![Toolbar: Layer](../image/command_icons/setlayertoobject_rt.png)
SetLayerToObject
Set the current layer to match a specified object.
Object layer properties
![Toolbar: Layer](../image/command_icons/changelayer.png)
ChangeLayer
Change an object's layer.
![Toolbars: Layer](../image/command_icons/changetocurrentlayer.png)
ChangeToCurrentLayer
Change an object's layer to the current layer.
![Toolbar: Layer](../image/command_icons/copytolayer.png)
CopyToLayer
Copy objects to a layer.
![Toolbar: Layer](../image/command_icons/matchlayer.png)
MatchLayer
Change an object's layer to match another object.