Quite right. I did a print screen for this (I usually snip images) and didn't have another way of saving it—now I do. Anyway, glad to know you can replicate the bug. • It would be nice if centering the X-zero for a double page spread wasn't so tortuous and would hold for all added pages. • Keep the current manual offset feature as well. • Also, the Y-zero gets mired at the top of page 1 for some reason on a multi-page spread. Publisher is a great program but I think the rulers, zeros and Guide Manager feature needs a complete rethink.  S