Thank you all for taking the time to explain.

After reading the descriptions of what marked/emphasized/topicalized actually mean, everything became clearer.

I believe, my confusion was mainly due to the fact, that I couldn't differentiate between these terms.

But I have one final (hopefully..) question:

jIH:
> Lets remove the ambiguity, of whether it's
> singular of plural, by writing: {vIghro'mey  
> tIQ'e' novmey bIH}. Would you accept this > to say "as for ancient cats, they are 
> aliens" ?
SuStel:
> I would accept it as a marked way to  
> emphasize vIghro'mey tIQ. But you don't  
> really mean to emphasize the phrase, just
> topicalize it. It already gets topicalized  
> as novmey bIH vIghro'mey tIQ'e'.

I understand now (finally), what topicalized means.

And, thank qeylIS, I understand too, what "marked way to emphasize" means.

But I wonder..

If I want to say "the ANCIENT CATS are aliens", emphasizing the "ancient cats", but in an unmarked way, then how do I it ?

If I just write {novmey bIH vIghro'mey tIQ'e'}, then the {vIghro'mey tIQ} is topicalized by the {-'e'}, but not emphasized..

~ m. qunen'oS 
Ca'Non Ca'NonoywIj..