Group Demo, OpenMDAO 2.x
Some code and an illustration that attempt to show the relationships between Components and Groups in OpenMDAO 2.x.
Explicit Connection Demo, OpenMDAO 2.x
Some code and an illustration that attempt to show how an explicit connection happens in OpenMDAO 2.x.
Problem Demo, OpenMDAO 2.x
Some code and an illustration that attempt to show how Problems, Drivers, and Solvers work together in OpenMDAO 2.x.
Promotions Demo, OpenMDAO 2.x
Some code and an illustration that attempt to show promotion works in OpenMDAO 2.x.