圖層
Layers are an option to group elements together. Click on the element to see and change the layer. Use the layer tool to change the layers of multiple elements.
The layers dialog
Open the layer dialog by clicking on an empty canvas and clicking on “Layers”.
Here you can see all the layers in the project. Remove a layer by clicking on the trash icon or moving to the left or right. Change the visibility of a layer by clicking on the eye icon.