Command: Add node
Symbol: 
Function: Adds a new property in the frame configuration, in the tree view of the interface properties
Call: menu, context menu
Requirement: The focus is in the Frame configuration tab.
The property is added to the bottom of the tree view. Double-click the new entry to open the line editor so that you can specify a suitable name. Moreover, you can use the Move node up command to position the property.
If you want to add another property under a category, then you can select one of the properties located under the category and click Add node. Then another property is inserted parallel to the selected one.