Layers are like transparent overlays on which you organize and group different kinds of drawing information. The objects you create have properties including layers, colors, and linetypes. Color helps you distinguish similar elements in your drawings, and linetypes help you differentiate easily between different drafting elements, such as centerlines or hidden lines. Organizing layers and objects on layers makes it easier to manage the information in your drawings.
图层就像透明的覆盖层，用户可以在上面组织和编组各种不同的图形信息。用户创建的对象具有各种特性，包括图层、颜色和线型。颜色可以帮助用户区分图形中类似的元素，而线型则可以帮助用户区分不同的绘图元素，例如中心线或隐藏线。组织图层以及图层上的对象可以更容易地管理图形中的信息。
For more information about this topic, see “Control the Properties of Objects” in the AutoCAD User's Guide.
有关本主题的详细信息，请参见《用户手册》中的“控制对象的特性”。
