Wa-Tor - an ecological simulation of predator-prey populations - is based upon A. K. Dewdney's 'Computer Recreations' article in the December 1984 issue of Scientific American.
|   | Name | Type | Identifier | Description | Constraints | 
| Output | Grid (*) | Data Object (optional output) | GRID | - | - | 
 | Wa-Tor (*) | Grid (optional output) | RESULT | - | - | 
 | Cycles | Table (output) | TABLE | - | - | 
| Options | Width (Cells) | Integer | NX | - | Minimum: 1 Default: 100 | 
 | Height (Cells) | Integer | NY | - | Minimum: 1 Default: 100 | 
 | Refresh | Boolean | REFRESH | - | Default: 1 | 
 | Initial Number of Fishes [%] | Floating point | INIT_FISH | - | Minimum: 0.000000 Maximum: 100.000000 Default: 30.000000 | 
 | Initial Number of Sharks [%] | Floating point | INIT_SHARK | - | Minimum: 0.000000 Maximum: 100.000000 Default: 7.500000 | 
 | Birth Rate of Fishes | Integer | FISH_BIRTH | - | Minimum: 0 Default: 3 | 
 | Birth Rate of Sharks | Integer | SHARK_BIRTH | - | Minimum: 0 Default: 12 | 
 | Max. Starvation Time for Sharks | Integer | SHARK_STARVE | - | Minimum: 0 Default: 4 | 
| (*) optional |