Once you have tapped a document in the document library Copper launches its document viewer. Copper uses the vast amount of screen space available on your iPad to show as many useful information about your PCB as possible while keeping the interface fast and responsive.
Copper currently features three different modes:
You choose the current mode with the mode selection on the top left corner of the document viewer. Tap on one of the items to activate it.
On the right side you can see the inspector. The inspector hosts quite a lot of controls and additional information and is context sensitive. Inspectors that don't make any sense in the current selected mode are disabled.
These modes are available
The canvas is the area where the content is displayed. In the above screenshots it's layout and schematics.
Most canvases have additional features that can be triggered by tapping on buttons in the toolbar below the canvas.