Purpose: For explaning the meaning of both 2 symbols

1) For the first symbol '→', it is mathematically speaking an implication operator.

Statement A → Statement B means (A/B could be a statement like (Posting DATE < current date)

- IF A is true and B is true then the result is true

- IF A is false and B is false then the result is true

- IF A is true and B is false then the result is false

- IF A is false and B is true then the result is true

2) For the second symbol '↔', it is mathematically speaking an equivalence

- IF A is true and B is true then the result is true

- IF A is false and B is false then the result is true

- IF A is true and B is false then the result is false

- IF A is false and B is true then the result is false