Topic Request: Ranges and progressions

[y9vad9]

Is your topic request related to a problem? Please describe.
There is not enough information about ranges.

Describe the solution you'd like
I would like to tell more about other types of ranges like char, double ranges and functions like step, downTo, until.

What place topic should have? Why?
I think somewhere after strings. Because there is no actual need in other OOP behaviours to explain.

Additional information
The only problem I see – there wasn't any information about infix functions, so functions like step and so on is under the question.