Palette Menu
The palette is located on the right side of the screen. A little tick indicates the current layer. The selected layer by default is a polysilicon (PO). The list of layers is given below.
- If you remove the tick on the right side of the layer, the layer is switched to protected mode. The Cut, Stretch and Copy commands no longer affect that layer.
- Use "View->Protect all" to protect all layers. The ticks are erased.
- Use "View->Unprotect all" to remove the protection. All layers can be edited.

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