The EditableNodeEnum type specifies whether the node is editable at runtime. Use the Editable property to specify whether a specified node can be edited at runtime. The AllowEdit property specifies the combination of keys that allows the user to edit a node. The LayoutStartChanging(exEditNode) event notifies your application once the user starts editing the node's caption. The LayoutEndChanging(exEditNode) event notifies your application once of the edit operation ends.