Is there any way to set up a document such that the page
border (one vertical line only) stays with the larger of
the 2 left and right margins? ie, if left margin=1.25
and right=.05, then vertical line page border appears on
the left...if right margin=1.25 and left=.05, then
vertical line page border appears on the right...

Or is there another way altogether to achieve this?

Thanks,
MM