So that it is out-of-date by EU4 1.9?Know what we should do? Make a petition asking for a new and up-to-date manual for EU 4 1.8.
Sorry, but no thank you. If they have development resources available - especially technical writers - I'd rather have them fixing all the broken or lying tooltips in the game.
My favorite - for entertainment value - is:
My Lord,
We have broken our alliance with
(name missing)
Of course, this one will be fixed by a developer. But there are plenty of places that need new and updated descriptions, such as the vassalization tooltip lying about "same religion needed" instead of "same religious group needed" and probably hundreds of other places.