Undo (Ctrl+Z) and Redo (Ctrl+Y) actions are accessible from the Edit menu. The history of undo actions is also available and allows reverting changes, backwards or forward, to a specific state by selecting the action.
It is also possible to cut (Ctrl+X), copy (Ctrl+C) or paste (Ctrl+V) one item or a group of items from the station tree. If an item is copied, all the items attached to it are also copied.