Customizing different heap sizes for multiple WebLogic servers

Were you aware that it is possible to give different servers in your WebLogic domain different heap size values?  I did not know that either until I read MOS document "How to Customize Different Heap Sizes for Different Servers in a WebLogic Domain" found via note ID 1924617.1 for how to change the JVM heap to be the same for all servers in the domain and also how to specify different JVM memory values between Admin and the managed servers in the domain.