Did you know? SWI-Prolog has a **Natural Language Processing (NLP)** librarySearch Documentation:

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#/\/2 | P and Q hold. |

#</2 | X is less than Y. |

#<==/2 | Q implies P. |

#<==>/2 | P and Q are equivalent. |

#=/2 | X equals Y. |

#=</2 | X is less than or equal to Y. |

#==>/2 | P implies Q. |

#>/2 | X is greater than Y. |

#>=/2 | X is greater than or equal to Y. |

#\/1 | The reifiable constraint Q does _not_ hold. |

#\/2 | Either P holds or Q holds, but not both. |

#\//2 | P or Q holds. |

#\=/2 | X is not Y. |

all_different/1 | Vars are pairwise distinct. |

all_distinct/1 | Like all_different/1, with stronger propagation. |

automaton/3 | Describes a list of finite domain variables with a finite automaton. |

automaton/8 | Describes a list of finite domain variables with a finite automaton. |

chain/2 | Zs form a chain with respect to Relation. |

circuit/1 | True if the list Vs of finite domain variables induces a Hamiltonian circuit. |

cumulative/1 | Equivalent to cumulative(Tasks, [limit(1)]). |

cumulative/2 | Tasks is a list of tasks, each of the form task(S_i, D_i, E_i, C_i, T_i). |

element/3 | The N-th element of the list of finite domain variables Vs is V. |

fd_dom/2 | Dom is the current domain (see in/2) of Var. |

fd_inf/2 | Inf is the infimum of the current domain of Var. |

fd_size/2 | Determine the size of a variable's domain. |

fd_sup/2 | Sup is the supremum of the current domain of Var. |

fd_var/1 | True iff Var is a CLP(FD) variable. |

global_cardinality/2 | Global Cardinality constraint. |

global_cardinality/3 | Global Cardinality constraint. |

in/2 | Var is an element of Domain. |

indomain/1 | Bind Var to all feasible values of its domain on backtracking. |

ins/2 | The variables in the list Vars are elements of Domain. |

label/1 | Equivalent to labeling([], Vars). |

labeling/2 | Assign a value to each variable in Vars. |

lex_chain/1 | Lists are lexicographically non-decreasing. |

scalar_product/4 | Cs is a list of integers, Vs is a list of variables and integers. |

serialized/2 | Describes a set of non-overlapping tasks. |

sum/3 | The sum of elements of the list Vars is in relation Rel to Expr. |

transpose/2 | Transpose a list of lists of the same length. |

tuples_in/2 | Relation must be a list of lists of integers. |

zcompare/3 | Analogous to compare/3, with finite domain variables A and B. |

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