User interface

• Drag on canvas to translate all items.
• Click on item to select it.
• Click while pressing SHIFT to enable multi selection.
• Drag from a node output to a node input to create an edge.
• Drag selected items to translate them.
• Press BACKSPACE to delete selected items.
• Double click on edge to delete it.
• Double click on canvas to open the selector.
• Type into the selector then press ENTER to create a new node.