Display different text to different usergroup
 

I'd like a mod to display different text to guests than it does to members in posts and threads. Like a bbcode I can just use in any post. Or something I could change to display different versions of a post for different usergroups.

Example

some guy's post: "how do you get an avatar?"

Me: "Hi, good question.
[member]You can get an avatar by editing your usercp located here.[/member]
[guest]You'll need to sign up or login before using an avatar. You can sign up here.[/guest] Let me know if you have any other questions."

Does any mod like this already exist?

I would check out this mod:
https://vborg.vbsupport.ru/showthread.php?t=203010