Access via property reference
A property reference is a simple access path containing just an elementary property name referring to a property in structure. Opening a property handle with property reference directly provides the property handle from the instance or a copy of it. The data set managed by the property handle is the data set stored for the property instance in the currently selected structure instance.
// access to city via basic property handles
Property persons(obh, "Persons", PI_Read);
Property address(&persons, "address"); // original instance property handle
Property city(&address, "city"); // original instance property handle
Property children(person, "children"); // copy of instance property handle
// PH-Macro: the short way of definition