** Operator** |
** Description** |

` and` |
true iff both operands are true |

` or` |
false iff both operands are false |

` not` |
true iff operand is false |

` =` |
true iff operands are equal |

` <` |
true iff left operand is less than right |

` >` |
true iff right operand is greater than right |

` <>` |
true iff operands are not equal |

` <=` |
true iff left is less than or equal to right |

` >=` |
true iff left is greater than or equal to right |