| clone | clone |
| current | Get the current value of an Iterator without changing its state |
| is_Iterator | Test if an object is an Iterator |
| Iterator | Making an Irregular Sequence Iterator |
| move | Increment an Iterator Without Returning the Value(s) |
| move_more | Increment an Iterator Without Returning the Value(s) |
| move_next | Increment an Iterator Without Returning the Value(s) |
| move_while | Increment an Iterator Without Returning the Value(s) |
| range | Python-style range function |
| sets | R Set Comprehension |
| that_for_all | R Set Comprehension |
| that_for_any | R Set Comprehension |
| we_have | R Set Comprehension |
| yield | Increment an Iterator and Return the Next Value(s) |
| yield_more | Increment an Iterator and Return the Next Value(s) |
| yield_next | Increment an Iterator and Return the Next Value(s) |
| yield_while | yield_while |