**Feature Request** >Brief title for your desired feature: Would like to check single layer at PCB How would you like the feature to work? >Why is this feature important to you? I need to check my or people designs by single layer At now, PCB editor only make cooper zone invisible,but not the layer. **Suggestion** Make a select beside "layers",as below ![enter image description here][1] for example,allegro. ![enter image description here][2] [1]: /editor/20160602/574f2f9a0bc81.png [2]: /editor/20160602/574f615c44f58.png