What size paper would we all agree upon? You listed "A4", I like "Letter". Close in size, but different. Get the world to agree, and maybe you have you wish one step closer. I'd not vote for "Business Card" sized.
"Your stupidity, Allen, is simply not up to par." -- Dave Mack (mack@inco.UUCP) "Yours is." -- Allen Gwinn (firstname.lastname@example.org), in alt.flame