Meta, the parent company of Facebook, is bringing Slack-style shortcuts to Messenger that will allow you to do things like send a message discreetly or quickly pull up a GIF while you’re talking with your pals. Meta is the parent business of Facebook.
According to Meta, two of the shortcuts are now active as of today, March 29th: @everyone and /silent are two commands that can be used to alert everyone in a conversation, which may be important if you want to ensure that everyone is paying attention. (I ask you, on behalf of your friends’ alerts, to please use this one wisely.) According to Meta, if you wish to send a message without pinging the whole group, you may do so by using the /silent shortcut.
There will be a few more shortcuts added in “the coming weeks,” including /pay, which will allow you to transfer or request money directly from the Messenger chatbox and will be available shortly on iOS and Android devices in the United States. You may view some possible GIFs to drop in the conversation by typing the command /gif followed by the subject of anything you want a GIF of. This functionality will be accessible for iOS in the near future. In addition, the emoticons /shrug and /tableflip, which will be available on iOS shortly, will allow you to drop the old _(()_/ and (°°)( ) emoticons without having to spell them out yourself in the text field.