| Symbol | Specification | Kind | Type |
|---|---|---|---|
| . + . | nat-basic2 | f | nat × nat → nat |
| . +1 | nat-basic1 | f | nat → nat |
| . - . | nat | f | nat × nat → nat |
| . -1 | nat-basic1 | f | nat → nat |
| . < . | nat-basic1 | p | nat × nat |
| . > . | nat | p | nat × nat |
| . ≤ . | nat | p | nat × nat |
| . ≥ . | nat | p | nat × nat |
| Inp | IOfun | v | nat → input,flexible |
| Outp | IOfun | v | nat → output,flexible |
| bv | IOfun | v | bool |
| i | IOfun | v | input |
| inp | IOfun | v | nat → input |
| input | IOfun | s | |
| m | nat-basic1 | v | nat |
| n | nat-basic1 | v | nat |
| n0 | nat-basic1 | v | nat |
| n1 | nat-basic1 | v | nat |
| nat | nat-basic1 | s | |
| o | IOfun | v | output |
| outp | IOfun | v | nat → output |
| output | IOfun | s |