Layers provide a method to separate drawing elements so unused information can be hidden when it is not being used. Objects in different layers can be displayed in different colors to distinguish different parts of the design.
Layers Toolbar
Enable the Layers toolbar in Setup > Toolbars > Layers. The layers toolbar provides a selection box to choose a specific layer to display.
The Activate all Layers 
button makes all layers visible.
Layers Dialogue
Each layer has several options: On, Off, Lock, and Move Lock. A check box indicates the option is enabled for the selected layer.
| On | All objects in the layer are displayed and selectable |
| Off | None of the objects in the layer are visible and none can be selected |
| Lock | All Objects in the layer are displayed but cannot be selected. Drawing tools will still snap to locked geometry. |
| Move Lock | All Objects in the layer are displayed and can be selected, but cannot be moved. |
Layer Operations
| Select the Current Layer | Check the Current box for that layer. |
| Add a New Layer | Click New. The new layer is added to the bottom of the list and is selected as the current layer. |
| Delete Layers | Select layer and Click Delete. All objects within the layer will also be deleted. |
| Remove Empty Layers | Click on Remove Empty button. |
| Rename a Layer | Edit the text in the name column for that layer. |
| Change the Color of a Layer | Click on the color displayed next to the layer to open the color selection dialogue. Select a new color and click OK. |
| Moving Layers | Select the layer and click Move Up or Move Down. Layers can also be moved by clicking and dragging the row header at the left edge of the list. |
| Hide or Display Layers | In the On and Off Column, check On to display a layer, check Off to hide a layer. The current layer cannot be hidden. |
| Lock a Layer | Check the Lock option. Clear the check to unlock the layer. |
| Save Changes and Exit | Click OK. |
| Cancel Changes | Click Cancel to discard any changes. |
Change Layer
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Select the objects to change layers
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Activate the Change Layer command
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Click on the new layer in the dialogue window. The current layer and new layer will both be displayed
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Click OK