[TYPO3] Default language

[Dmitrii Dimandt]

Ok. Here's what I don't understand:

http://typo3.org/documentation/tips-tricks/multi-language-sites-in-typo3/

"Define which language will be the default language. All pages will
primarily be created in this language. The page titles in the page
tree will also be shown in this language in the backend."

Well, how exactly do I define that???

And also in documentation for sr_language_menu it says: "Don't forget
to select your default language as well".

How do I do _that_? If the language is nowhere to be found?

Thу rest of language-related issues is trivial.