is it possible to make custom commands like: /help that will go to a Pacific tab on the gui. is it possible to have a somewhat transparant background

like this: https://imgur.com/a/0a4BRl9

or something like this https://imgur.com/a/E6ZBnxK

You can look at https://bl.ocks.org/lopspower/03fb1cc0ac9f32ef38f4 for clear background.