I'm not sure if this is the right place to post this, but may be someone can help me out on this.

I hope to get some insights on a specific question concerning the US Visa Waiver Program that is IMO not fully covered on the embassy's website.

It states, that one has to be "holding a return or onward ticket".

Can the onward ticket be a seperate ticket? Can it be an e-ticket, if I carry a print-out?

Also, is ANA "an air or sea carrier that has signed an agreement with the US Immigration and Naturalization Service to participate in the visa-waiver program"?

Thank you!