Page Setup - Paper Size

Hi There

When will the Page Set-up option offer page sizes other than A4, Letter, Legal, and Executive?

I ask as I'm trying to produce a A5 newsletter for printing and snail mailing but the page set-up is very annoying as it doesn't even offer a custom paper size. So I have had to fiddle around with the page layout for it to sort of work.

Even Adobe Buzzword has a custom paper size option, so when will Zoho Writer?

Regards Richard