41.   The current system has a few idiosyncracies.

42.   The system has many advanced features.

43.   The British members would like the system to have enough legal power to make companies behave themselves.

44.   The system has to be transparent.

45.   The system then has to transform these requirements for information into requirements for data.

46.   These systems have to be designed and implemented.

47.   Both systems have much in common.

48.   We have seen that a chemical system has an internal energy, U.

49.   This energy can change by an amount AU if energy is transferred in to or out of the system.

50.   Ensure that you are familiar with any heating controls the system may have such as a time clock or programmer.