Targets: 1) users that are @mentioned in the text of the Message object; 2) if the bot's message is a reply (has ReplyToMessage), sender of the original message. 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.
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 ReplyToMessage), sender of the original message.Example: A user requests to change the bot's language, bot replies to the request with a keyboard to select the new language.
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