Edit
Through this menu option user can undo and redo actions as well as copy operators.
Undo - Undo the last action performed.
Redo - Redo the last action performed.
Copy - Copy selected nodes. Shortcut CTRL+C.
Cut - Cut selected nodes. Shortcut CTRL+X.
Paste - Paste copies nodes along with their connections. Shortcut CTRL+V. User has two options Paste and Paste Instance. With Paste Instance, new nodes will have parameters wired to the source nodes.
Paste Instance - Paste copies nodes along with their connections as instances. That means that new nodes will have parameters wired to the source nodes.
Delete - Delete selected nodes. Shortcut DEL.