About the Layer Tree
In the Layer Tree, you can manipulate layers, their items, and the display status. Use the View menu to control the display of layers.
You can access the Layer Tree using the following methods:
• Click 
or > to display the Layer Tree in the navigation window or in a separate dialog box.
or > to display the Layer Tree in the navigation window or in a separate dialog box.• In the Model Tree navigator window click 
and then click Layer Tree on the list. The Layer command is available while you are working below the highest-level functional menu of any mode (Drawing mode, Assembly mode, Part mode, and so forth) so that you can manipulate the layer display status or layer membership as required without having to return to the Part, Assembly, or top-level menu.
and then click Layer Tree on the list. The Layer command is available while you are working below the highest-level functional menu of any mode (Drawing mode, Assembly mode, Part mode, and so forth) so that you can manipulate the layer display status or layer membership as required without having to return to the Part, Assembly, or top-level menu.Use the shortcut buttons on the Layer Tree toolbar, right-click on items listed in the Layer Tree, or use the following drop-down menus to perform layer related functions:
• —Display the Model Tree or items in different levels of layers, including nested and sub-model layers within your assembly.
—Display the Model Tree or items in different levels of layers, including nested and sub-model layers within your assembly.• —Create new layers, set rules, or edit properties with the Layer Properties dialog box. In addition, you can propagate, delete, remove, cut, copy, and paste items or layers.
—Create new layers, set rules, or edit properties with the Layer Properties dialog box. In addition, you can propagate, delete, remove, cut, copy, and paste items or layers.• 
—Add non-local items to layers being defined or sub-model layers.
—Add non-local items to layers being defined or sub-model layers.The following symbols appear in the Layer Tree to indicate the type of layer associated with items:
Hidden Items—Items temporarily hidden from the Model Tree.
Simple layers—Items are manually added to the layer.
Default layers—Created using the def_layer configuration option.
Rules Layers—Layers defined primarily with rules.
Nested Layer—Layer that primarily contains other layers
Same Name Layer—Holds all same name layers of all components in the assembly.