I might be totally wrong, but it occures to me that the mysterious file I was mentioning at question no.4 is the LocalStrings file.
To clarify question no.4 and 5:
What text will be displayed in the game screen, when there is no reference in the ACW/Setting: LocalStrings - files? Just the text as it is written in the field?
If the answer is yes, does this also count for fields connected with a $-symbol?
e.g.: In a model-file one can find a line called "text" followed by a reference to some field in the LocalStrings file
For the model of Samuel Cooper (CSA) this would be: "text = $uni_txt_CSA_RELee" (yes, it's RELee, but anyway). So in the game display will be shown the text stored in the named field inside the LocalStrings database.
If I wanted to display a custom text, can I write it just a simple plain text? "text = Samuel Cooper" Would that be the text which is now displayed in the game?
Thank you for answers.
PS: I'm asking these silly questions because I am really not capable of "modding" despite the help of the ACW database and the AGE-Wiki modding pages. It is all a mystery to me. So I walk the long way by modifying all the files directly with a text editor. I'm optimistic, still, that this more hearts-of-iron-style-editting is possible without causing game problems.