What do layers in CAD mean? What does it do? How to set it up?

Layers are like transparent films on which different objects can be drawn. Objects in the same layer have the same color, line type, line width and other object characteristics by default. Objects drawn on other layers below can be seen through one or more layers.

Each layer also has control switches that control whether the layer is visible or locked. It can be easily controlled individually, and different types of graphic information can be well organized by using layers, making this information easy to manage.

Layers are a powerful tool for users to organize and manage graphics. In AutoCAD, all graphics objects have four basic attributes: layer, color, line type and line width. Users can use different layers, different colors, different line types and line widths to draw different objects and elements, conveniently controlling the display and editing of objects, thereby improving the efficiency and accuracy of drawing complex graphics.

Create a new layer--set the layer, color, line type and line width, save it and use it