1.   Some schemes use retroactive notation in order to signal new facets.

2.   What is algorithmic if we use one notation for numbers is also algorithmic if we use the other.

3.   Using functional notation, we can write where L, is the transactions demand for money.

4.   Either algebraic or coordinate notation may be used, and clocks to limit the time for a move are available.

5.   In the example as well as in examples which follow, we use a notation which is not programming language specific.