|single\_use|[Bool](../types/Bool.md) | Optional|Requests clients to hide the keyboard as soon as it's been used. The keyboard will still be available, but clients will automatically display the usual letter-keyboard in the chat – the user can press a special button in the input field to see the custom keyboard again.|
|selective|[Bool](../types/Bool.md) | Optional|Use this parameter if you want to show the keyboard to specific users only. Targets: 1) users that are @mentioned in the text of the Message object; 2) if the bot's message is a reply (has reply\_to\_message\_id), sender of the original message. <br>Example: A user requests to change the bot‘s language, bot replies to the request with a keyboard to select the new language. Other users in the group don’t see the keyboard.|