<<ContentsMoves a node up amongst its siblings within its grouping. Nodes are automatically grouped by type, and a node cannot be moved outside of its grouping.
Moves a node down amongst its siblings within its grouping. Nodes are automatically grouped by type, and a node cannot be moved outside of its grouping.
The name of this menu entry varies depending on the currently-selected node, and there may be more than one "Add" menu item. Choosing one of the "Add" entries creates a new child node of the selected type under the currently-selected node, making the current node the parent. Only valid children of the selected parent node are shown.
The name of this menu entry varies depending on the currently-selected node, and there may be more than one "Insert" menu item. Insert functions in a similar method to Add except that the node is placed as a sibling of the currently-selected node, rather than a child. Only valid siblings of the selected node are shown.
Nodes are grouped by node type. Inserting a node will place the node into its proper grouping if the selected node is not of the same type as the inserted node.