Unbreakable space

Hi,

I discovered a hyphenation support in iPhone Stanza 1.5. I'm surprised my native Czech language is supported since it is quite rare :-)

Even if the hyphenation makes the book even more comfortable to read I discovered that the line break is sometimes made in place where it should not be. Is it possible to make unbreakable spaces in the *.epub file? In LaTex you can use '~' character for that.

Thanks,

Ondrej