Credits or Text screen shown when stepping on a trigger

[MapTheGame]

Basically, in my map you start in a house and it says, 'There appears to be a note on that table over there'

I need it so that when a player walks up to the table, steps on the trigger is shows a darkened screen (still showing the house in the background) and text to appear saying

'Dear Mr. &name,

If you're reading this, you have returned...etc.'

and i need to so that it either scrolls or is a still text and to exit that screen they either have to move or click exit or something along those lines. (If the click to close isn't possible, an automatic close after a few seconds would be good too

[F |Madness| U]

Both of these are possible, I only know how to do the latter where it would close after x seconds, you just create a black hud element that covers the entire screen and is partially see through. Then create another hud element on top with the text, and scroll it down. It is quite simple to do if you look at hud element scripting in cod.