PROBLEM How do I get " " into a menu text?

[Hypertexter]

Thank you for moving this theme...

I do not understand what to do:
Should I edit my style.css (or the header.inc.php?) with this entry:?

Code:

#menu li { ...
white-space:nowrap;
...}

There is no #menu-like text in these files now...

And then I can use two words in the GUI box?
Using ALT + 0160 in the box is not the right way?