When you say inline markdown shortcut, is an example of that pressing Ctrl-B on some highlighted text in order to surround it with asterisks? And is the idea o

When you say inline markdown shortcut, is an example of that pressing Ctrl-B on some highlighted text in order to surround it with asterisks? And is the idea of mentions that we can use Lexical to provide nice things like pop-up auto-complete of a username / automatically transform the username into a link inside of the input text?