You can save layer states in a drawing and restore them later. This makes it easy to return to specified settings for all layers during different stages when completing a drawing or when plotting a drawing.
用户可以在图形中保存图层状态，以后再将其恢复。这样可以很容易地返回到所有图层在绘制或打印期间不同阶段所作的特定设置。
Layer states include whether or not a layer is turned on, frozen, locked, plotted, and automatically frozen in new viewports, and the layer's color, linetype, lineweight, and plot style. You can specify which settings you want to save, and you can save different groups of settings for a drawing.
图层状态包括图层是否打开、冻结、锁定、打印、是否在新视口中自动冻结，以及图层的颜色、线型、线宽和打印样式。用户可以指定要保存的设置，还可以保存同一图形中不同编组的设置。
The LayerStateManager is used to save and restore layer states.
LayerStateManager 用于保存和恢复图层状态。
For more information about saving layer settings, see “Save and Restore Layer Settings” in the AutoCAD User's Guide.
更多关于保存图层设置的详细信息，请参见《AutoCAD 用户手册》中的“保存和恢复图层设置”。
