Specifies the alignment of a Structure object.

type Boolean.

Hidden items are most convenient for storing data that is associated with a node, but should not influence the visual appearance of the node. This avoids additional maps or tables where associated information is stored.

An example might be the hierarchically-ordered staff of a company. While navigating through the hierarchy, perhaps only the staff member’s name is of interest. However, after selecting the node, all the information about the staff member is desired. This could be defined over several Structure items: the Structure containing the ‘Name’ item with a Hidden property set to FALSE. The Structure(s) containing all other information have the Hidden property set to TRUE.