Autodesk 057A1-05A111-1001 Getting Started Guide - Page 57

Control Layers, Turn off layers, Freeze layers., Lock layers.

Page 57 highlights

Control Layers To make objects on a layer invisible, you can turn off the layer or freeze it in the Layer Properties Manager. You can also lock layers to reduce the possibility of modifying objects accidentally. ■ Turn off layers. Use this option rather than freezing if you frequently need to switch a layer's visibility. ■ Freeze layers. Use this option if you don't need a layer to be visible for a long time. Thawing a frozen layer causes an automatic regeneration of the drawing and is slower than turning a layer on. ■ Lock layers. Use this option to prevent objects on a layer from being modified. You can still use the objects on a locked layer for operations that don't modify the objects. For example, you can snap to these objects to use them as guides for precision drawing. Organize Drawings with Layers | 51

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Organize Drawings with Layers
|
51
Control Layers
To make objects on a layer invisible, you can turn off the layer or freeze it in the Layer Properties
Manager. You can also lock layers to reduce the possibility of modifying objects accidentally.
Turn off layers
.
Use this option rather than freezing if you frequently need to switch a layer’s
visibility.
Freeze layers.
Use this option if you don’t need a layer to be visible for a long time. Thawing a
frozen layer causes an automatic regeneration of the drawing and is slower than turning a layer
on.
Lock layers.
Use this option to prevent objects on a layer from being modified. You can still use
the objects on a locked layer for operations that don’t modify the objects. For example, you can
snap to these objects to use them as guides for precision drawing.