A Child is a Model that has a Parent and is shown in the Model Tree (above) under the Parent. Italics indicate Child Groups (covered later in this Unit).
A Parent can provide Parameters to each of its Children. Children exist underneath a Child Group.
Above, Automobile is the Root Design (and gained its name when the Project was created). It contains an Engine and a Chassis as Children. The Engine contains six EngineCylinders, each of which contains one ConnectingRod and one Valve.
In turn, Chassis has children, including Doors with their own children, DoorHandles
