###
A.6.2 Interface Functions

Three simple interface functions call ```
logic
```

. They are ```
ANY
```

, ```
FINDALL
```

, and ```
FINDALLSET
```

. Each takes two arguments: a result expression to instantiate and a goal expression. ```
ANY
```

returns the first solution found. ```
FINDALL
```

returns all solutions. ```
FINDALLSET
```

returns all solutions deleting duplicates.

KnowledgeWorks and Prolog User Guide (Macintosh version) - 29 Feb 2008