How to use markup from Telegraf?

Question

JavaScript

Good afternoon, I am learning to write a bot in js, and after searching Google I found out about telegraf and convenient buttons at the bottom of the Telegram client application, I used to use extra, oversize for them, etc., but I always get an error, please give an example that exactly you need to import from the Telegraf library, and how to use the mark up keyboard buttons correctly, I'm a teapot in this, I will be grateful.
On their official website, it is not very clear how exactly to use them.

Answer 1

Examples: https://github.com/telegraf/telegraf/tree/develop/...
Keyboard: https://github.com/telegraf/telegraf/blob/develop/...